UNITED NATIONAL BANCORP
S-4, 1998-11-23
NATIONAL COMMERCIAL BANKS
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As filed with the Securities and Exchange Commission on November 23, 1998.

                                                   Registration No. 333-_____


                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                    FORM S-4

                             REGISTRATION STATEMENT
                                      under
                           THE SECURITIES ACT OF 1933


                             UNITED NATIONAL BANCORP
             (Exact name of registrant as specified in its charter)


                                   New Jersey
         (State or other Jurisdiction of Incorporation or Organization)

          6712                                   22-2894827
(Primary Standard Industrial            (I.R.S. Employer Identification No.)
 Classification Code Number)


                               1130 Route 22 East
                                  P.O. Box 6000
                       Bridgewater, New Jersey 08807-0010
                                  908-429-2200
               (Address, including zip code, and telephone number,
                 including area code, of registrant's principal
                               executive offices)

                      Thomas C. Gregor, Chairman, President
                           and Chief Executive Officer
                             United National Bancorp
                               1130 Route 22 East
                                  P.O. Box 6000
                       Bridgewater, New Jersey 08807-0010
                                  908-429-2200
            (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)


                  Please send copies of all communications to:

MICHAEL W. ZELENTY, ESQ.                JOHN J. GORMAN, ESQ.
Pitney, Hardin, Kipp & Szuch            Luse Lehman Gorman Pomerenk & Shick, PC
P.O. Box 1945                           5335 Wisconsin Avenue, NW
Morristown, New Jersey 07962-1945       Suite 400
(973) 966-8125                          Washington, DC  20015
                                        (202) 274-2001



<PAGE>




         Approximate date of commencement of proposed sale to the public: At the
Effective Date of the Merger,  as defined in the Amended and Restated  Agreement
and Plan of Merger dated September 22, 1998 (the "Merger Agreement"),  among the
Registrant,  United National Bank,  Raritan Bancorp Inc. and The Raritan Savings
Bank attached as Appendix A to the Joint Proxy Statement/Prospectus.

         If the  securities  being  registered on this Form are being offered in
connection  with the formation of a holding company and there is compliance with
General Instruction G, check the following box. |_|

         If this form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the  Securities  Act,  check the following box and
list  the  Securities  Act   registration   number  of  the  earlier   effective
registration statement for the same offering. |_| __________

         If this  form is a  post-effective  amendment  filed  pursuant  to Rule
462(b) under the Securities Act, check the following box and list the Securities
Act registration number of the earlier effective  registration statement for the
same offering. |_| __________

<TABLE>
<CAPTION>

                                           CALCULATION OF REGISTRATION FEE

==================================== ============== ========================= ============================ ================
 Title of each class of securities   Amount to be       Proposed maximum      Proposed maximum aggregate      Amount of
         to be registered             registered       offering price per          offering price**         registration
                                                             unit**                                              fee
==================================== ============== ========================= ============================ ================
   <S>                                 <C>                   <C>                      <C>                      <C>         
   Common Stock, $1.25 par value       4,208,218             $21.79                   $91,697,070              $25,492
                                        Shares*
==================================== ============== ========================= ============================ ================

</TABLE>

* The number of shares of United Common Stock issuable in the Merger in exchange
for shares of Raritan Common Stock with an Exchange Ratio of 1.595, as set forth
in the Merger Agreement,  and assuming that all currently outstanding options to
acquire shares of Raritan Common Stock are exercised prior to the Effective Time
of the Merger.  The Registrant also hereby  registers such additional  shares of
its common stock as may be issuable in the Merger pursuant to the  anti-dilution
provisions of the Merger Agreement.

** Estimated  solely for the purpose of calculating the registration fee for the
filing on Form S-4 pursuant to Rule 457(f)(1)  under the Securities Act based on
the average  ($34.75) of the high ($36.00) and low ($33.50)  prices  reported by
Nasdaq for Raritan  Common  Stock as of November  17,  1998,  a date within five
business days prior to the filing of this Registration Statement.


         The Registrant hereby amends this  Registration  Statement on such date
or dates as may be necessary to delay its  effective  date until the  Registrant
shall file a further amendment which specifically  states that this Registration
Statement shall  thereafter  become effective in accordance with Section 8(a) of
the  Securities  Act of 1933 or until the  Registration  Statement  shall become
effective on such date as the  Commission,  acting pursuant to Section 8(a), may
determine.

<PAGE>

                [RARITAN LOGO]                       [UNITED LOGO]


                 MERGER PROPOSED -- YOUR VOTE IS VERY IMPORTANT

         The Boards of  Directors of Raritan  Bancorp  Inc. and United  National
Bancorp have approved a Merger Agreement which provides for Raritan to be merged
with United.

         In the merger,  each share of Raritan  Common  Stock will be  converted
into  1.595  shares of  United  Common  Stock.  Cash  will be paid  iHnstead  of
fractional  shares. The 1.595 exchange ratio is adjusted to reflect United's 10%
stock dividend paid on November 2, 1998,  and is subject to further  adjustments
described in this Joint Proxy Statement-Prospectus.

         The  merger  cannot  be  completed  unless  the  shareholders  of  both
companies approve it. We have scheduled special meetings so our shareholders can
vote on the merger.  Each Board of  Directors  unanimously  recommends  that its
shareholders vote "FOR" the merger.

         This  document  serves two  purposes.  It is the Joint Proxy  Statement
being used by the Raritan and United Boards to solicit  proxies for use at their
respective  special meetings.  It is also the Prospectus of United regarding the
United  Common  Stock to be issued if the  merger is  completed.  This  document
describes  the  Merger  Agreement  in detail  and  includes a copy of the Merger
Agreement  as Appendix A. We urge you to read this  entire  document  carefully.
Also, on the following page we tell you how to obtain copies of those  documents
on file with the Securities and Exchange  Commission which we have  incorporated
by reference in this document.


            The dates, times and places of the meetings are as follows:

            The Raritan Meeting
            [Day of Week], [Date]
            [Time]
            Raritan Valley Country Club
            State Highway 28
            Somerville, New Jersey  08876

            The United Meeting
            [Day of Week], [Date]
            [Time]
            [Street Address]
            [City and State]

            Only  shareholders  of record as of _________,  1998 are entitled to
attend and vote at their respective meetings.

         Your  vote is very  important.  Whether  or not you  plan to  attend  a
meeting,  please take the time to vote by  completing  and mailing the  enclosed
proxy card to us. If you sign, date and mail your proxy card without  indicating
how you  want to vote  your  proxy  will be  counted  as a vote in  favor of the
merger.  For  Raritan  stockholders,  a failure to return the proxy card will in
most cases have the same effect as a vote against the merger.




Arlyn D. Rus                                    Thomas C. Gregor
Chairman, President and CEO                     Chairman, President and CEO
Raritan Bancorp Inc.                            United National Bancorp


Neither the Securities and Exchange Commission,  nor any bank regulatory agency,
nor any  state  securities  commission  has  approved  or  disapproved  of these
securities  or  determined  if this  prospectus  is  truthful or  complete.  Any
representation to the contrary is a criminal offense.


        This Joint Proxy Statement-Prospectus is dated _________, 1998,
                   and is first being mailed to shareholders
                    of United and Raritan on _________, 1998

<PAGE>

                                TABLE OF CONTENTS

                                                                 Page
SUMMARY                                                             1
        The United Meeting                                          1
        The Raritan Meeting                                         1
        The Companies                                               2
        The Merger                                                  2
SELECTED FINANCIAL DATA OF UNITED                                   7
SELECTED FINANCIAL DATA OF RARITAN                                  9
COMPARATIVE PER SHARE DATA                                         10
                          SUMMARY PRO FORMA FINANCIAL
    INFORMATION                                                    12
INTRODUCTION                                                       13
CERTAIN INFORMATION ABOUT UNITED                                   14
        General                                                    14
        United National Bank                                       14
CERTAIN INFORMATION ABOUT RARITAN                                  15
        General                                                    15
        The Raritan Savings Bank                                   15
THE RARITAN MEETING                                                16
        Date, Time and Place                                       16
        Purpose                                                    16
        Board Recommendation                                       16
        Required Vote                                              16
        Record, Date; Voting Rights; Proxies                       17
        Solicitation of Proxies                                    18
        Quorum                                                     18
THE UNITED MEETING                                                 18
        Date, Time and Place                                       18
        Purpose                                                    18
        Board Recommendation                                       18
        Required Vote                                              19
        Record, Date; Voting Rights; Proxies                       19
        Solicitation of Proxies                                    20
        Quorum                                                     20
THE PROPOSED MERGER                                                20
        General Description; Certain
              Defined Terms                                        20
        Consideration; Cash instead of
              Fractional Shares                                    21
        Conversion of Raritan Options                              21
        Background of and Reasons for the Merger                   22
        Interests of Certain Persons in the Merger                 24
        Opinion of Raritan's Financial Advisor                     26
        Resale Considerations Regarding
              United Common Stock                                  30
        Conditions to the Merger                                   30
        Conduct of Business Pending the Merger                     31
        Stock Option to United for Raritan Shares                  32
        Representations, Warranties and Covenants                  32
        Regulatory Approvals                                       33
        Management and Operations
              After the Merger                                     33
        Exchange of Certificates                                   33
        Amendments; Termination                                    34
        Accounting Treatment of the Merger                         36
        Federal Income Tax Consequences                            36
        No Dissenters' Rights                                      37
PRO FORMA FINANCIAL INFORMATION                                    38
DESCRIPTION OF UNITED CAPITAL STOCK                                44
        Common Stock                                               44
        Preferred Stock                                            45
COMPARISON OF THE RIGHTS OF STOCK-
    HOLDERS OF UNITED AND RARITAN                                  46
        Voting Requirements                                        46
        Cumulative Voting                                          47
        Classified Board of Directors                              47
        Rights of Dissenting Shareholders                          47
        Shareholder Consent to Corporate Action                    48
        Dividends                                                  48
        By-laws                                                    48
        Limitations of Liability of Directors
              and Officers                                         49
        Minimum Price Provision                                    49
        Consideration of Acquisition Proposals                     49
        Preferred Stock                                            50
SHAREHOLDER PROPOSALS                                              50
INFORMATION INCORPORATED BY
      REFERENCE                                                    51
OTHER MATTERS                                                      51
LEGAL OPINION                                                      52
EXPERTS                                                            52

APPENDIX A    Merger Agreement                                    A-1
APPENDIX B    Stock Option Agreement                              B-1
APPENDIX C    Endicott Fairness Opinion                           C-1

                     HOW TO GET COPIES OF RELATED DOCUMENTS

            This  document   incorporates   important   business  and  financial
information  about United National Bancorp and Raritan Bancorp Inc. which is not
included in or delivered with this document. United and Raritan Shareholders may
receive the information  free of charge by writing or calling the persons listed
below. For United documents, make your request to Ralph L. Straw, Jr., Corporate
Secretary,  United  National  Bancorp,  1130  Route  22  East,  P.O.  Box  6000,
Bridgewater,  New Jersey 08807;  telephone  number (908)  429-2200.  For Raritan
documents, make your request to Helen J. Frangelli, Corporate Secretary, Raritan
Bancorp Inc.,  454 Route 28,  Bridgewater,  New Jersey 08807;  telephone  number
(908) 231-8100  (ext.  127). We will respond to your request within one business
day by sending the  requested  documents  by first  class mail or other  equally
prompt means.  In order to ensure timely delivery of the documents in advance of
the meetings, any request should be made by ___________, 1998.

                                       i

<PAGE>

                                     SUMMARY

         This is a summary of certain information  regarding the proposed merger
and the shareholder  meetings to vote on the merger.  Because this is a summary,
it does not contain all the  detailed  information  contained  elsewhere in this
document.   We  urge   you  to   carefully   read   the   entire   Joint   Proxy
Statement-Prospectus, including the Appendixes.


         The  shares of United  Common  Stock  offered  hereby  are not  savings
accounts, deposits or other obligations of a bank or savings association and are
not insured by the FDIC or any other governmental agency.

         No person has been  authorized to give any  information  or to make any
representation other than what is included in this document. If such information
or  representation  is given or made,  it must not be relied upon as having been
authorized.

The United Meeting

Date, Time and Place .................  United National Bancorp  ("United") will
                                        hold its special meeting of shareholders
                                        (the "United Meeting") on [Day of Week],
                                        [Date] [Time], at [Location].

Record Date...........................  _____________, 1998 (the "Record Date").

Shares Entitled to Vote.............    __________ shares of United Common Stock
                                        were  outstanding on the Record Date and
                                        entitled to vote at the United Meeting.

Purpose of Meeting....................  To  consider  and vote on an Amended and
                                        Restated  Agreement  and Plan of  Merger
                                        dated  as of  September  22,  1998  (the
                                        "Merger   Agreement"),   by  and   among
                                        United,   United's  subsidiary,   United
                                        National  Bank,   Raritan  Bancorp  Inc.
                                        ("Raritan"),  and Raritan's  subsidiary,
                                        The Raritan Savings Bank.

Vote Required.........................  A  majority  of the  votes  cast  at the
                                        United Meeting,  whether in person or by
                                        proxy,  must  be cast  in  favor  of the
                                        Merger  Agreement  for United to approve
                                        the Merger Agreement.

Board Recommendation .................  The  United  Board  of   Directors   has
                                        unanimously    approved    the    Merger
                                        Agreement  and  unanimously   recommends
                                        that United  shareholders vote "FOR" the
                                        Merger Agreement.

The Raritan Meeting

Date, Time and Place..................  Raritan will hold its special meeting of
                                        stockholders (the "Raritan  Meeting") on
                                        [Day  of  Week],   [Date]   [Time],   at
                                        [Location].

Record Date...........................  _____________, 1998 (the "Record Date").

Shares Entitled to Vote.............    _________ shares of Raritan Common Stock
                                        were  outstanding on the Record Date and
                                        entitled to vote at the Raritan Meeting.

Purpose of Meeting....................  To  consider  and  vote  on  the  Merger
                                        Agreement.

                                       1
<PAGE>
Vote Required.........................  The  affirmative  vote,  in person or by
                                        proxy,  of a majority of the outstanding
                                        shares  of  Raritan   Common   Stock  is
                                        required    to   approve    the   Merger
                                        Agreement.

Board Recommendation..................  The  Raritan   Board  of  Directors  has
                                        unanimously    approved    the    Merger
                                        Agreement  and  unanimously   recommends
                                        that Raritan stockholders vote "FOR" the
                                        Merger Agreement.
THE COMPANIES
United..............................    United, a New Jersey corporation, is the
                                        bank holding company for United National
                                        Bank  ("UNB").  UNB is a  national  bank
                                        which  operates 28  branches  located in
                                        Central  and  Northern  New  Jersey.  On
                                        September 30, 1998, United completed its
                                        acquisition   of  State  Bank  of  South
                                        Orange  ("SBSO")  by  merging  SBSO into
                                        UNB. The SBSO merger was  accounted  for
                                        as a  pooling  of  interests.  UNB  is a
                                        member of the Federal Reserve System and
                                        its deposits are insured by the FDIC. At
                                        September    30,   1998,    United   had
                                        consolidated   assets  of  approximately
                                        $1.5   billion.    United's    principal
                                        executive  offices  are  located at 1130
                                        Route 22 East,  Bridgewater,  New Jersey
                                        08807.   United's  telephone  number  is
                                        (908) 429-2200.

Raritan...............................  Raritan, a Delaware corporation,  is the
                                        bank  holding  company  for The  Raritan
                                        Savings  Bank  ("RSB").  RSB  is  a  New
                                        Jersey-chartered   stock   savings  bank
                                        which operates seven branches located in
                                        Central New  Jersey.  At  September  30,
                                        1998, Raritan had consolidated assets of
                                        approximately $433.6 million.  Raritan's
                                        principal  executive offices are located
                                        at 454 Route 28, Bridgewater, New Jersey
                                        08807.  Raritan's  telephone  number  is
                                        (908) 231-8100.
THE MERGER
General Description; Certain Defined
Terms...............................    The Merger  Agreement sets out the terms
                                        for the  merger of Raritan  with  United
                                        (the  "Merger"),   with  United  as  the
                                        surviving  entity.  A closing  under the
                                        Merger  Agreement  is to  occur  on  the
                                        tenth  business  day  after the day when
                                        all  material   conditions   to  closing
                                        (including    receipt   of    regulatory
                                        approvals) have first been met. However,
                                        United  and   Raritan  may  agree  on  a
                                        different  closing  date.  In the Merger
                                        Agreement  and  in  this  document,  the
                                        actual date of the closing is called the
                                        "Closing Date" and the date on which the
                                        material conditions to closing have been
                                        met is called the "Determination  Date".
                                        United and Raritan  anticipate  that the
                                        Merger   will  become   effective   (the
                                        "Effective   Time")   at  the  close  of
                                        business on the Closing Date.

Consideration.........................  At the Effective Time, each  outstanding
                                        share of  Raritan  Common  Stock will be
                                        converted   into   1.595   shares   (the
                                        "Exchange   Ratio")  of  United   Common
                                        Stock.   The  1.595  Exchange  Ratio  is
                                        adjusted to reflect  United's  10% stock
                                        dividend  paid on November 2, 1998.  The
                                        Exchange  Ratio may be adjusted again to
                                        take into account any stock split, stock
                                        dividend  or  similar  transaction  with
                                        respect  to  United   Common   Stock  (a
                                        "Capital Change"). The Exchange Ratio is
                                        also subject to adjustment as summarized
                                        under  "Termination  Rights"  on page 4 
                                        and   more   fully    described    under
                                        "Amendments; Termination" on pages 34 -
                                        36.
                                       2
<PAGE>
Conversion of Stock Options...........  At the Effective Time, each  outstanding
                                        option to purchase  Raritan Common Stock
                                        will  be  converted  into an  option  to
                                        purchase  United Common  Stock.  The new
                                        options  will  have the same  terms  and
                                        conditions  as the old  options,  except
                                        that  the   number  of  shares  and  the
                                        exercise   price  will  be  adjusted  to
                                        reflect the Exchange Ratio.

Cash instead of Fractional Shares;      Raritan  stockholders  will not  receive
Average Pre-Closing Price.............. fractional shares of United Common Stock
                                        in  the   Merger.   Instead   they  will
                                        receive,   without   interest,   a  cash
                                        payment  equal to the  fractional  share
                                        interest  they   otherwise   would  have
                                        received,   multiplied  by  the  Average
                                        Pre-Closing   Price  of  United   Common
                                        Stock. The "Average  Pre-Closing  Price"
                                        means the average of the closing  prices
                                        of  United  Common  Stock on the  Nasdaq
                                        Stock  Market  for the  ten  consecutive
                                        trading days ending with (and including)
                                        the  Determination   Date.  The  Average
                                        Pre-Closing    Price   is   subject   to
                                        anti-dilution adjustment in the event of
                                        a Capital Change.

Opinion of Raritan's Financial Advisor  The  Raritan  Board has  hired  Endicott
                                        Financial Advisors,  L.L.C. ("Endicott")
                                        as its financial advisor for the Merger.
                                        Endicott  has  delivered  to the Raritan
                                        Board written  opinions dated  September
                                        22, 1998 and __________,  1998 regarding
                                        the  fairness of the  Exchange  Ratio to
                                        Raritan  stockholders  from a  financial
                                        point   of  view.   Endicott's   updated
                                        fairness   opinion  is   reproduced   as
                                        Appendix   C  to  this   document.   For
                                        information  concerning  the  procedures
                                        followed,   assumptions  made,   matters
                                        considered  and  qualifications  on  the
                                        review   undertaken   by   Endicott   in
                                        rendering its opinions, see pages 26-29.

 Federal Income Tax Consequences......  Pitney, Hardin, Kipp & Szuch, counsel to
                                        United, has delivered its opinion to the
                                        effect that the Merger will qualify as a
                                        tax-free  reorganization  as  defined in
                                        Section 368 of the Internal Revenue Code
                                        of  1986,   as  amended  (the   "Code").
                                        Assuming  Section  368(a)  of  the  Code
                                        applies,   the   conversion  of  Raritan
                                        Common  Stock into United  Common  Stock
                                        will be a  nontaxable  event for United,
                                        Raritan and the Raritan stockholders. No
                                        taxable gain or loss will be  recognized
                                        by Raritan  stockholders until they sell
                                        the United Common Stock received by them
                                        in the  Merger.  The basis of the United
                                        Common  Stock  received by each  Raritan
                                        stockholder  will  be the  basis  of the
                                        Raritan   Common   Stock   converted  in
                                        connection with the Merger.  The holding
                                        period of the United  Common  Stock will
                                        include  the   holding   period  of  the
                                        Raritan Common Stock converted.
                                           We urge Raritan stockholders to read 
                                        the more complete description  of   the
                                        Merger's tax consequences on pages 36-37
                                        and to consult their own tax advisors as
                                        to the specific tax consequences to them
                                        of the Merger under applicable tax laws.

Exchange of Certificates..............  Promptly  after the Effective  Time, the
                                        Exchange   Agent   will   send   Raritan
                                        stockholders  letters of transmittal and
                                        instructions  for exchanging their stock
                                        certificates       for      certificates
                                        representing    United   Common   Stock.
                                        Raritan  stockholders should not send in
                                        their  stock   certificates  until  they
                                        receive  instructions  from the Exchange
                                        Agent. 
                                       3
<PAGE>
No Dissenters Rights..................  Under applicable New Jersey and Delaware
                                        law,    neither   United   nor   Raritan
                                        stockholders have dissenters'  rights of
                                        appraisal in connection with the Merger.
 
Conditions to the Merger..............  Completion  of the Merger is  contingent
                                        on a  number  of  conditions,  including
                                        approval  of the Merger by the  required
                                        vote of Raritan and United shareholders;
                                        receipt  of  certain   bank   regulatory
                                        approvals; receipt of an updated opinion
                                        from  United's  counsel   regarding  the
                                        tax-free  nature of the Merger;  receipt
                                        of a letter  from  United's  independent
                                        public       accountants       regarding
                                        qualification    of   the   Merger   for
                                        pooling-of-interests   accounting;   and
                                        receipt  of  the  fairness   opinion  of
                                        Endicott which is attached as Appendix C
                                        to this document.

Regulatory Approvals..................  Completion   of  the   Merger   requires
                                        approval    by   the   Office   of   the
                                        Comptroller of the Currency (the "OCC").
                                        OCC  approval  does  not  constitute  an
                                        endorsement   of   the   Merger   or   a
                                        determination  that  the  terms  of  the
                                        Merger are fair to Raritan  stockholders
                                        or  United   shareholders.   United  and
                                        Raritan have  applied for the  necessary
                                        approval,  and  expect  to  receive  it.
                                        However,  we can not  assure you that it
                                        will  be  granted,  or  that  it will be
                                        granted  on  a  timely   basis   without
                                        conditions  unacceptable  to  United  or
                                        Raritan.  

Termination Rights....................  Raritan has the right to  terminate  the
                                        Merger  Agreement if, between  September
                                        21, 1998 and the Determination Date, the
                                        price of United Common Stock falls:

                                        * by more than 15% in absolute terms, 
                                          and

                                        * by at least 10% more than an index
                                          based on the common stock of 20 other
                                          financial institutions.

                                        United has the right to nullify any such
                                        termination  by increasing  the Exchange
                                        Ratio   as   provided   in  the   Merger
                                        Agreement.  The Merger  Agreement may be
                                        terminated  by either  Raritan or United
                                        if the  Effective  Time has not occurred
                                        by June 30,  1999.  For a more  complete
                                        description    of   these    and   other
                                        termination  rights available to Raritan
                                        and United, see pages 34-36.

Amendment of the Merger Agreement.....  The Merger  Agreement  may be amended by
                                        the   written   consent  of  United  and
                                        Raritan   at  any  time   prior  to  the
                                        Effective    Time.    However,     under
                                        applicable  Delaware law,  certain types
                                        of  amendments  (such as an amendment to
                                        decrease the Exchange  Ratio)  cannot be
                                        made  following  adoption  of the Merger
                                        Agreement  by the  Raritan  stockholders
                                        without their approval.

Accounting Treatment of the Merger....  United expects to account for the Merger
                                        as a pooling of interests  for financial
                                        reporting purposes. It is a condition to
                                        United's and  Raritan's  obligations  to
                                        close the Merger that  United  receive a
                                        letter  from  its   independent   public
                                        accountants   to  the  effect  that  the
                                        Merger  qualifies  for  such  accounting
                                        treatment.   Under  pooling-of-interests
                                        accounting,  Raritan's  historical basis
                                        of assets, liabilities and stockholders'
                                        equity will be retained by United.

                                       4
<PAGE>

No Solicitation of Alternative
Transactions..........................  In the  Merger  Agreement,  Raritan  has
                                        agreed  that  it  will  not   encourage,
                                        negotiate    with,    or   provide   any
                                        information  to any  person  other  than
                                        United    concerning   an    acquisition
                                        transaction  involving  Raritan  or RSB.
                                        However,  Raritan  may take  certain  of
                                        these actions if its Board of Directors,
                                        after     consulting    with    counsel,
                                        determines  it should do so based on the
                                        Board's    fiduciary    duties.     This
                                        restriction,   along   with  the  Option
                                        described  in the  following  paragraph,
                                        may deter other  potential  acquirors of
                                        control of Raritan.

Stock Option to United for Raritan
Shares................................  In connection  with the  negotiation  of
                                        the Merger  Agreement,  Raritan  granted
                                        United  an  option  (the   "Option")  to
                                        purchase up to 470,000 shares of Raritan
                                        Common Stock (approximately 19.9% of the
                                        outstanding   Raritan  shares  when  the
                                        Option was granted). The Option exercise
                                        price is $26.00 per share. The Option is
                                        exercisable only if certain specifically
                                        enumerated  triggering  events occur and
                                        the  Merger is not  consummated.  United
                                        has no right to vote the shares  covered
                                        by the Option prior to its exercise. The
                                        agreement  granting  the  Option  is set
                                        forth as Appendix B to this document.

                                        United  could  recognize  a  gain  if it
                                        exercises  the  Option and  resells  the
                                        shares  it  acquires  for more  than the
                                        exercise  price.  The  existence  of the
                                        Option   may   deter   other   potential
                                        acquirors  of control of Raritan,  since
                                        it would  probably  increase the cost of
                                        acquiring  all  the  shares  of  Raritan
                                        Common Stock.  United's  exercise of the
                                        Option       could       also       make
                                        pooling-of-interests          accounting
                                        treatment  unavailable  to a  subsequent
                                        acquiror.

Interests of Certain Persons in the
Merger................................  The  Merger   Agreement   provides  that
                                        United and UNB will each  appoint  Arlyn
                                        D. Rus and another  Raritan  designee to
                                        its Board of Directors at the  Effective
                                        Time. Raritan has designated, and United
                                        has accepted,  William T. Kelleher, Jr.,
                                        as  the  second  designee.  Mr.  Rus  is
                                        currently  the  Chairman,  President and
                                        Chief Executive Officer of Raritan.  Mr.
                                        Kelleher  is  currently  a  director  of
                                        Raritan.   Current  Raritan   directors,
                                        including Mr. Rus and Mr. Kelleher, will
                                        be   invited   to  serve   as   advisory
                                        directors for UNB.

                                        The Merger  Agreement also provides that
                                        for  a  six-year  period  following  the
                                        Effective Time United will indemnify the
                                        directors   and   officers   of  Raritan
                                        against certain liabilities.

                                        At  the  Record  Date,   directors   and
                                        executive  officers of Raritan and their
                                        affiliates  of  Raritan  owned  ________
                                        shares  or ____% of the  Raritan  Common
                                        Stock.

                                        For  additional   information  see  "THE
                                        PROPOSED MERGER -- Interests of Certain
                                        Persons in the Merger" on page 24-26.

                                       5

<PAGE>

Resale of United Common Stock.........  The shares of United  Common Stock to be
                                        issued in the Merger will be  registered
                                        under  the  Securities  Act of 1933  and
                                        will be freely transferable,  except for
                                        shares  received by  persons,  including
                                        directors  and  executive   officers  of
                                        Raritan,  who may be deemed "affiliates"
                                        of  Raritan  pursuant  to Rule 145 under
                                        the Securities Act.

Differences in Stock-holders' Rights..  At  the  Effective  Time,  each  Raritan
                                        stockholder   will   become   a   United
                                        shareholder.   The   rights  of  Raritan
                                        stockholders  are currently  governed by
                                        Delaware  corporate  law  and  Raritan's
                                        certificate   of    incorporation    and
                                        by-laws.    The    rights    of   United
                                        shareholders  are governed by New Jersey
                                        corporate  law and United's  certificate
                                        of incorporation and by-laws. The rights
                                        of  Raritan   and  United   shareholders
                                        differ    with    respect    to   voting
                                        requirements  and various other matters.
                                        See pages 46 - 50.  Delaware  law refers
                                        to   holders   of   common    stock   as
                                        "stockholders,"  while  New  Jersey  law
                                        uses  the term  "shareholders."  In this
                                        document,  the terms  "stockholders" and
                                        "shareholders" are used interchangeably.

                                       6

<PAGE>
                        SELECTED FINANCIAL DATA OF UNITED

         Set forth below is certain selected historical  consolidated  financial
data for United.  The selected financial data for, and as of the end of, each of
the years in the five-year  period ended December 31, 1997, are derived from the
consolidated  financial statements of United, which have been audited and do not
include  the  financial  data  of  SBSO as such  information  was  deemed  to be
immaterial.  The consolidated  financial  statements as of December 31, 1997 and
1996,  and for each of the years in the  three-year  period  ended  December 31,
1997, are incorporated by reference herein. See page 51. The selected financial
data for the nine months ended  September  30, 1998 and 1997 and as of September
30, 1998 are derived from the  unaudited  consolidated  financial  statements of
United which are incorporated by reference herein.  The selected  financial data
for the nine months ended  September  30, 1998 and 1997 and as of September  30,
1998 also  include the accounts  and results of  operations  for the SBSO merger
which was  consummated  on September 30, 1998 and was accounted for as a pooling
of interests. In the opinion of United's management, the unaudited data reflects
all adjustments  (consisting of normal  recurring  adjustments)  necessary for a
fair presentation of such data.  Results for the nine months ended September 30,
1998 do not  necessarily  indicate the results  which you should  expect for any
other interim period or for the year as a whole.

<TABLE>
<CAPTION>
                                                 At or
                                         For Nine Months Ended
                                              September 30,                                 At or For Years Ended December 31,
                                        ----------------------------    ------------------------------------------------------------
                                            1998          1997           1997        1996         1995          1994          1993
                                         ----------    ----------       ----------  ---------    ---------  ----------     ---------
                                                    (Dollars in thousands, except per share data)
 <S>                                     <C>           <C>             <C>       <C>         <C>           <C>           <C>        
 STATEMENT OF INCOME DATA:
   Interest Income                       $    76,856   $   68,426      $88,577   $   79,360  $   77,552     $   65,384   $    64,386
   Interest Expense                           33,989       27,609       36,700       30,130      30,104         18,913        20,062
                                         ------------  ------------    -------  ------------ -----------    -----------  -----------
   Net Interest Income                        42,867       40,817       51,877       49,230      47,448         46,471        44,324
   Provision For Possible Loan Losses          2,169        2,844        3,600        3,049         871          2,123         5,239
                                         ------------  ------------    -------  ------------ -----------    -----------  -----------
   Net Interest Income After
     Provision For Possible
     Loan Losses                              40,698       37,973       48,277       46,181      46,577         44,348        39,085
   Non-Interest Income                        15,500       14,023       19,388       15,546      14,653         14,421        16,312
   Non-Interest Expense                       41,414       37,423       47,420       43,102      47,429         42,633        42,111
                                         ------------  ------------    -------  ------------ -----------    -----------  -----------
   Income Before Income Taxes and
     Effect of Accounting Change              14,784       14,573       20,245       18,625      13,801         16,136        13,286
   Provision for Income Taxes                  4,339        4,720        6,365        6,345       4,295          5,264         4,653
                                         ------------  ------------    -------  ------------ -----------    -----------  -----------
   Income Before Effect of
     Accounting Change                        10,445        9,853       13,880       12,280       9,506         10,872         8,633
   Cumulative Effect of Change in
     Accounting for Income Taxes                  --           --           --           --          --             --         1,059
                                         ============    ==========    =======  ===========  ==========     ===========    =========
   Net Income                            $    10,445   $    9,853      $13,880   $   12,280  $    9,506     $   10,872   $     9,692
                                         ============  ============    =======  ============ ===========    ===========  ===========
   Income Before Merger Related
     and Restructuring Charges,
     Effect of Accounting Change,
     and SAIF Assessment                 $    12,139   $   11,251      $15,278   $   12,587  $   11,595    $    10,872   $     8,633
                                         ============  ============    ========  ===========  ===========   ===========   ==========
  COMMON SHARE DATA: (1)
   Net Income Per Diluted Share          $      0.93   $     0.88      $  1.35     $   1.21  $    0.94     $     1.09   $      0.98
   Net Income Per Diluted Share
     Before Merger-Related and
     Restructuring Charges,
     and SAIF Assessment                 $      1.08   $     1.01      $  1.48     $   1.24  $    1.15     $     1.09   $      0.87
   Cash Dividends Declared Per Share     $      0.45   $     0.38      $  0.52     $   0.45  $    0.42     $     0.38   $      0.34
   Book Value Per Share (period-end)     $     11.40   $    10.18      $ 10.88     $   9.62  $    8.91     $     7.37   $      7.39
   Average Diluted Shares
     Outstanding (in thousands)               11,255       11,157       10,300       10,190     10,123          9,952         9,865

  FINANCIAL RATIOS:
   Return on Average Assets                     0.98 %       1.07  %      1.16 %       1.15 %     0.92 %         1.18 %        1.09%
   Return on Average
     Stockholders' Equity                      11.55 %      12.43  %     13.49 %      13.21 %    11.52 %        14.39 %       13.87%
   Net Interest Margin                          4.52 %       4.93  %      4.86 %       5.17 %     5.13 %         5.62 %        5.57%
   Efficiency Ratio                            63.52 %      60.29  %     59.93 %      61.93 %    65.52 %        65.93 %       67.17%

  ADJUSTED FINANCIAL    RATIOS: (2)
   Return on Average Assets                     1.14 %       1.22  %      1.28 %       1.17 %     1.12 %         1.18 %        0.97%
   Return on Average
     Stockholders' Equity                      13.42 %      14.20  %     14.84 %      13.55 %    14.05 %        14.39 %       12.35%
</TABLE>
                                        7
<PAGE>

<TABLE>
<CAPTION>

                                        At or For Nine Months Ended
                                              September 30,              At or For Years Ended December 31
                                        ---------------------------     --------------------------------------------------------
                                          1998            1997          1997          1996          1995        1994       1993
                                          ----            ----          ----          ----          ----        ----       ----
                                                              (Dollars in thousands, except per share data)
<S>                                  <C>             <C>           <C>           <C>            <C>          <C>        <C>       
BALANCE SHEET DATA (at period end):
Total Assets                         $  1,516,710    $ 1,346,179   $ 1,309,836   $  1,103,242   $ 1,071,262  $ 950,158  $  924,395
Securities                                637,561        571,159       587,774        373,756       383,730    343,922     428,323
Federal Funds Sold                         55,725         15,925         1,500          5,887        10,004     14,085       9,772
Loans (Net of Unearned Income)            709,067        663,525       613,712        621,035       582,554    519,651     415,052
Allowance for Possible Loan
  Losses                                    7,359          8,515         7,633          8,158         8,297     10,768      11,950
Deposits                                1,124,530      1,026,088       987,849        936,720       905,964    815,868     816,127
Short-Term Borrowing (3)                  104,329         78,718        79,546         46,328        53,347     52,301      26,681
Other Borrowings (4)                      119,682         92,703        92,706          9,693         9,680      1,269       1,266
Stockholders' Equity                      126,398        112,675       110,950         96,952        89,537     72,694      72,633

CAPITAL RATIOS:
Leverage Ratio (period-end)                  8.75%          9.07%         8.96%          7.96%         7.18%      8.68%       8.15%
Tier I Capital to Risk-Weighted
  Assets (period-end)                       14.11%         15.02%        14.87%         11.66%        10.99%     14.30%      16.13%
Combined Tier I and Tier II
  Capital to Risk-Weighted
  Assets (period-end)                       14.93%         16.07%        15.86%         12.78%        12.20%     15.73%      18.06%

OTHER RATIOS:
Loans to Deposits (period end)              63.05%         64.67%        62.13%         66.30%        64.30%     63.69%      50.86%
Non-Performing Loans to Loans
  (period end) (5)                           0.95%          1.53%         1.41%          1.81%         1.59%      2.34%       3.14%
Allowance for Possible Loan
  Losses to Non-Performing
  Loans (period end) (5)                   109.44%         84.01%        88.45%         72.46%        92.18%     88.74%      91.62%
Allowance for Possible
  Loan Losses to Loans
  (period end)                               1.04%          1.28%         1.24%          1.31%         1.34%      1.83%       2.80%
Non-Performing Assets As a
  Percentage of Loans, Other
  Real Estate Owned and Other
  Assets Owned (period end)                  1.02%          1.78%         1.67%          2.11%         2.04%      2.63%       3.70%
Dividend Payout Ratio                          48%            43%           39%            37%           44%        35%         34%

</TABLE>

- --------------------

  (1)   Adjusted for stock dividends and splits.

  (2)   Before  merger-related and restructuring  charges,  effect of accounting
        change and SAIF assessment.

  (3)   Includes  Federal funds  purchased,  securities sold under agreements to
        repurchase  less than one year,  Federal  Home  Loan Bank  advances  and
        demand notes - U.S. Treasury.

  (4)   Includes obligation under capital lease, Federal Home Loan Bank advances
        - one year or more and long-term debt.

  (5)   Non-performing  loans consists of non-accrual loans,  restructured loans
        and loans past due 90 days or more and still accruing.

                                       8

<PAGE>


                       SELECTED FINANCIAL DATA OF RARITAN

            Set  forth  below  is  certain  selected   historical   consolidated
financial data for Raritan.  The selected  financial data for, and as of the end
of, each of the years in the  five-year  period ended  December  31,  1997,  are
derived from the consolidated  financial statements of Raritan,  which have been
audited. The consolidated financial statements as of December 31, 1997 and 1996,
and for each of the years in the three-year  period ended December 31, 1997, are
incorporated by reference herein.  See page 51. The selected  financial data for
the nine months ended  September  30, 1998 and 1997 and as of September 30, 1998
are derived from the  unaudited  consolidated  financial  statements  of Raritan
which  are  incorporated  by  reference  herein.  In the  opinion  of  Raritan's
management,  the unaudited data reflects all  adjustments  (consisting of normal
recurring  adjustments)  necessary for a fair presentation of such data. Results
for the nine months ended  September  30, 1998 do not  necessarily  indicate the
results which you should expect for any other interim  period or for the year as
a whole.


<TABLE>
<CAPTION>

                                                     At or
                                             For Nine Months Ended
                                               September 30,                         At or For Years Ended December 31,
                                       ----------------------------     ------------------------------------------------------------
                                             1998           1997        1997         1996           1995         1994         1993
                                             ----           -----       ----         ----           ----         ----         ----- 
                                                                             (Dollars in thousands, except per share data)
 <S>                                    <C>             <C>           <C>          <C>          <C>             <C>         <C>  
 INCOME STATEMENT DATA:
   Interest income                      $    22,323     $  20,336   $    27,647  $   24,931  $    23,456     $   20,892  $   20,049
   Interest expense                          12,366        10,508        14,525      12,857       13,007          9,992       9,230
                                        ------------    ----------- ------------ ----------- ------------   ------------ -----------
   Net interest income                        9,957         9,828        13,122      12,074       10,449         10,900      10,819
   Provision for possible loan losses           225           450           600         450          300            450       2,290
                                        ------------    ----------- ------------ ----------- ------------   ------------ -----------
   Net interest income after
     provision for possible
     loan losses                              9,732         9,378        12,522      11,624       10,149         10,450       8,529
   Other income                               1,140           796         1,049         720          658            702       2,658
   Operating expenses                         6,304         5,549         7,464       7,423        6,593          6,721       7,432
                                        ------------    ----------- ------------ ----------- ------------   ------------ -----------
   Income before income taxes                 4,568         4,625         6,107       4,921        4,214          4,431       3,755
   Income taxes                               1,358         1,706         2,199       1,813        1,542          1,577       1,352
   Cumulative effect of
     accounting changes                          --            --            --          --           --             --          13
                                        ============    =========== ===========  ==========  ============   ============ ===========
   Net income                           $     3,210     $   2,919   $     3,908  $    3,108  $     2,672     $    2,854  $    2,416
                                        ============    =========== ============ =========== ============   ============ ===========

  PER COMMON SHARE DATA:
   Net income per share
            Basic                       $      1.35     $    1.24   $      1.66  $     1.39  $      1.17     $     1.26  $     1.07
            Diluted                            1.27          1.15          1.54        1.27         1.09           1.19        1.02
   Book Value                                 13.67         12.64         13.01       12.45        11.77          10.35        9.89
   Dividends                                   0.45         0.354          0.47        0.40         0.35           0.31        0.25

  RATIOS:
   Return on average assets                    1.01 %        1.04%         1.02%       0.89%        0.80%          0.88%       0.81%
   Return on average equity                   13.37         13.20         13.13       11.71        10.53          12.33       11.22
  FINANCIAL CONDITION DATA:
   Total assets                         $   433,555     $ 407,262   $   408,308  $  375,393  $   354,810     $  333,546  $  307,332
   Investment securities held-to-maturity    23,645        45,290        41,307      51,919       61,406         86,224     121,074
   Securities available-for-sale             33,403        52,303        48,951      47,253       50,547         40,456          --
   Loans, net                               306,153       261,847       267,700     235,070      195,172        183,323     165,795
   Allowance for loan losses                  3,774         3,310         3,305       2,965        2,582          2,729       3,094
   Deposits                                 359,491       335,910       337,084     331,178      315,038        296,166     281,333
   Shareholders' equity                      33,583        29,996        30,874      28,268       26,348         23,440      22,391

</TABLE>

                                       9

<PAGE>

                           COMPARATIVE PER SHARE DATA

            Set forth below are the  earnings per share,  period-end  book value
per share and cash dividends per share of United Common Stock, SBSO Common Stock
and  Raritan  Common  Stock for the periods  noted.  The data is set forth on an
historical and pro forma basis,  as well as pro forma  equivalent per share data
for Raritan.  The historical per share data have been derived from the financial
statements of United and Raritan which are  incorporated by reference herein and
from the SBSO  financial  statements.  See page 51. The pro forma combined share
data have been derived  after giving effect to the SBSO merger and the Merger as
if  each  occurred  at  the  beginning  of  the  period   presented   using  the
pooling-of-interest method of accounting.

        
         The  historical  per share data for both  United and  Raritan  has been
restated  to  retroactively  reflect  the  effect of stock  dividends  and stock
splits.  See "Pro Forma  Financial  Information"  on pages 38 - 43; "-- Selected
Financial  Data of United" on pages 7 - 8; and "-- Selected  Financial Data of
Raritan" on page 9.


<TABLE>
<CAPTION>

                                                                              Pro Forma                         Pro Forma Equivalent
                                                                           Combined United                       Equivalent per
                                               Historical     Historical      and SBSO    Historical  Pro Forma  Raritan Share(2)
                                               United (1)        SBSO                      Raritan    Combined
<S>                                             <C>            <C>           <C>           <C>        <C>            <C>
Nine Months Ended September 30, 1998
Net Income Per Diluted Share..................  $ 0.93               N/A           N/A      $ 1.27    $0.89          $  1.42
Book Value Per Share .........................   11.40               N/A           N/A       13.67     0.19            16.25
Cash Dividends Per Share (3)..................    0.45               N/A           N/A        0.45     0.45             0.72

Year Ended December 31, 1997
Net Income Per Diluted Share..................  $  1.35        $  1.03        $ 1.30        $ 1.54    $1.21          $  1.93
Book Value Per Share..........................    10.88           8.88         10.53         13.01     9.93            15.84
Cash Dividends Per Share (3)..................     0.52            --           0.52          0.47     0.52             0.83

Year Ended December 31, 1996
Net Income Per Diluted Share..................  $  1.21        $  1.23        $ 1.16        $ 1.27    $1.07          $  1.71
Book Value Per Share..........................     9.62           7.71          9.30         12.45     8.93            14.24
Cash Dividends Per Share (3)..................     0.45            --           0.45          0.40     0.45             0.72

Year Ended December 31, 1995
Net Income Per Diluted Share..................  $  0.94        $  1.17        $ 0.91        $ 1.09    $0.85          $  1.36
Book Value Per Share..........................     8.91           6.58          8.58         11.77     8.29            13.22
Cash Dividends Per Share (3)..................     0.42            --           0.42          0.35     0.42             0.67
- -------------------------------

</TABLE>


  (1)   United  completed  the  merger  with  SBSO on  September  30,  1998  and
        accordingly  filed,  in its September 30, 1998 Quarterly  Report on Form
        10-Q, financial information on a combined basis to include the financial
        results of SBSO for the nine months ended September 30, 1998. Prior year
        historical  financial  information  has not been  restated  for the SBSO
        merger as such information was deemed to be immaterial.

  (2)   Raritan pro forma  equivalent  per share data is computed by multiplying
        the pro forma  combined per share data (giving  effect to the Merger) by
        the Exchange Ratio of 1.595.

  (3)   The amount of future dividends  payable by United, if any, is subject to
        the  discretion of United's Board of Directors.  The Directors  normally
        consider  United's and UNB's cash needs,  general  business  conditions,
        dividends from subsidiaries and applicable governmental  regulations and
        policies.  Pro forma amounts assume that United would have declared cash
        dividends per share on United Common Stock  (including the United Common
        Stock  issued in the  Merger  for  Raritan  Common  Stock)  equal to its
        historical cash dividends per share declared on United Common Stock.

                                       10

<PAGE>


            The first table below presents, for the periods indicated,  the high
and low  closing  prices per share of United  Common  Stock and  Raritan  Common
Stock. The second table presents  information  concerning the last sale price of
United Common Stock and of Raritan  Common Stock on September 21, 1998 (the last
business day before the Merger  Agreement was announced)  and on  _____________,
1998 (a date shortly before the date of this Joint Proxy  Statement-Prospectus).
The second table also presents the  equivalent  value of United Common Stock per
Raritan  share which is computed  by  multiplying  the last sale price of United
Common Stock on the dates indicated by the 1.595 Exchange  Ratio.  United Common
Stock and Raritan  Common  Stock are each traded on the Nasdaq  National  Market
System  ("Nasdaq").  We urge you to obtain current market  quotations for United
Common Stock and Raritan  Common Stock.  Because the Exchange Ratio is fixed and
trading prices fluctuate,  Raritan stockholders are not assured of receiving any
specific  market value of United Common Stock.  The price of United Common Stock
at the Effective  Time may be higher or lower than the sale price at the time of
entering  into the  Merger  Agreement,  the time of  mailing  this  Joint  Proxy
Statement-Prospectus or at the time of the Meetings.


<TABLE>
<CAPTION>

                                                  Closing Sale                       Closing Sale
                                                Price Per Share                     Price Per Share
                                                   of United                          of Raritan
                                                Common Stock(1)                    Common Stock (1)

                                                High            Low                 High           Low
<S>                                         <C>                 <C>            <C>             <C>
1996:
First Quarter...............................$    13.75          12.95          $    14.83      $    14.00
Second Quarter..............................     13.45          12.34               14.67           13.83
Third Quarter...............................     14.05          12.65               14.67           13.50
Fourth Quarter..............................     15.86          13.91               15.67           14.17

1997:
First Quarter...............................     18.97          15.55               17.00           15.50
Second Quarter..............................     17.26          15.86               20.50           16.33
Third Quarter...............................     21.34          17.26               25.75           19.50
Fourth Quarter..............................     26.25          21.45               29.50           25.50

1998:
First Quarter...............................     29.32          23.18               28.75           25.50
Second Quarter..............................     28.98          26.14               30.25           26.25
Third Quarter...............................     28.30          21.14               34.75           24.75
Fourth Quarter (through _________, 1998)....


</TABLE>

<TABLE>
<CAPTION>
                                                                            Equivalent
                           Closing Sale            Closing Sale           Value of United
                         Price Per Share         Price Per Share          Common Stock Per
                            of United               of Raritan            Share of Raritan
                            Common Stock            Common Stock             Common Stock
<S>                         <C>                        <C>                      <C>
DATE

September 21, 1998             $26.75                  $33.00                   $42.67
____________, 1998

</TABLE>

  (1)   The prices of United  Common  Stock and Raritan  Common  Stock have been
        restated to give retroactive effect to stock dividends and stock splits.

                                       11

<PAGE>

                     SUMMARY PRO FORMA FINANCIAL INFORMATION

            The following tables present certain  unaudited  combined  condensed
financial information derived from the Unaudited Pro Forma Financial Information
for the periods and at the dates  indicated.  The Pro Forma  combined  financial
information takes into account United's recently  completed  acquisition of SBSO
in addition  to the  pending  acquisition  of  Raritan.  The Pro Forma  combined
information  gives effect to the proposed  Merger  accounted for as a pooling of
interests,  as if the  Merger  had been  consummated  for  statement  of  income
purposes  on the first  day of the  applicable  periods  and for  balance  sheet
purposes on September 30, 1998. See "Pro Forma  Financial  Information" on pages
38 - 43. The Summary Pro Forma Financial Information is based on the historical
financial  statements of United and Raritan incorporated by reference herein and
SBSO  historical  financial  statements.  See page 51.  The Pro Forma  Financial
Information assumes a 1.595 Exchange Ratio.

            The  Summary  Pro  Forma  Financial  Information  should  be read in
conjunction  with the Pro Forma  Financial  Information  and the  related  notes
thereto on pages 38 - 43 and the consolidated  financial  statements and related
notes  incorporated  by  reference  in this  document.  The Pro Forma  Financial
Information does not necessarily  indicate the results of operations which would
have been  achieved had the Merger been  consummated  as of the beginning of the
periods for which such data are  presented  and should not be construed as being
representative of future periods.

<TABLE>
<CAPTION>

               PRO FORMA UNAUDITED COMBINED FINANCIAL INFORMATION
                    (In thousands, except for per share data)

                                               For the Nine Months
                                                    Ended
                                                 September 30,                      For the Years Ended December 31,
                                                                             ----------------------------------------------------
                                                     1998                         1997               1996                 1995
                                                ------------------------     -------------       ------------        ------------
<S>                                             <C>                         <C>                 <C>                 <C>
Results of Operations:

Net Interest Income Before Provision For
      Possible Loan Losses                      $      52,824               $     67,940        $    63,944         $    60,312
Provision for Possible Loan Losses                      2,394                      4,432              3,691               1,398
Net Interest Income After Provision for
      Possible Loan Losses                             50,430                     63,508             60,253              58,914
Income Before Income Taxes                             19,352                     27,482             24,585              18,766
Net Income                                             13,655                     18,447             15,971              12,673
Net Income per Diluted Common Share                      0.89                       1.21               1.07                0.85


                                                 At September 30, 1998
                                               ---------------------------
Balance Sheet:

Total Assets                                    $     1,947,988
Total Deposits                                        1,484,021
Total Stockholders' Equity                              151,538
Book Value Per Share                                      10.19
</TABLE>

                                       12

<PAGE>

                                  INTRODUCTION

            The Boards of Directors  of Raritan  Bancorp  Inc.  ("Raritan")  and
United  National  Bancorp  ("United")  have  approved  an Amended  and  Restated
Agreement  and Plan of  Merger,  dated as of  September  22,  1998 (the  "Merger
Agreement"),  by and among United,  United's  subsidiary,  United National Bank,
Raritan and Raritan's subsidiary, The Raritan Savings Bank. The Merger Agreement
provides for Raritan to be merged with United (the "Merger"), with United as the
surviving corporation. The Merger cannot be completed unless the shareholders of
both Raritan and United approve it.

            This document  serves two purposes.  It is the Joint Proxy Statement
being used by the Raritan and United Boards of Directors to solicit  proxies for
use at their respective special meetings called to seek shareholder  approval of
the Merger  Agreement.  It is also the Prospectus of United regarding the United
Common Stock to be issued if the Merger is completed.  Thus, we sometimes  refer
to this document as the Joint Proxy Statement-Prospectus.

            This document  describes the Merger  Agreement in detail.  A copy of
the  Merger  Agreement  is  attached  as  Appendix  A to  this  document  and is
incorporated  herein by reference.  We urge you to read this entire document and
the Appendices carefully.

            All  information   and  statements   contained  or  incorporated  by
reference  in this  document  about  Raritan  were  supplied  by Raritan and all
information and statements about United were supplied by United.

            The shares of United  Common  Stock  offered  hereby are not savings
accounts, deposits or other obligations of a bank or savings association and are
not insured by the FDIC or any other governmental agency.

            No person has been authorized to give any information or to make any
representation other than what is included in this document. If such information
or  representation  is given or made,  it must not be relied upon as having been
authorized.

                           FORWARD LOOKING STATEMENTS

            Contained  within and incorporated by reference in this document are
certain  forward  looking  statements  with respect to the financial  condition,
results of operations  and business of United and Raritan.  Such  statements are
not historical  facts and include  expressions  about United's and/or  Raritan's
confidence, strategies and expressions about earnings, new and existing programs
and products,  relationships,  opportunities,  technology and market conditions.
These  statements  may be identified  by  forward-looking  terminology,  such as
"expect", "believe" or "anticipate",  or expressions of confidence like "strong"
or  "on-going",  or  similar  statements  or  variations  of  such  terms.  Such
forward-looking statements involve certain risks and uncertainties. Factors that
may cause actual results to differ  materially  from those  contemplated by such
forward looking statements include,  among others, the following  possibilities:
(1) expected  cost  savings or revenue  enhancements  from the Merger  cannot be
realized as anticipated;  (2) deposit  attrition,  customer loss or revenue loss
following the Merger is greater than expected;  (3) competitive  pressure in the
banking and financial services industry increases significantly;  (4) changes in
the  interest  rate  environment;  (5) Year  2000  computer  problems  not being
effectively  addressed by United's Year 2000 compliance program; and (6) general
economic  conditions,  either nationally or in the state of New Jersey, are less
favorable than expected.

                                       13

<PAGE>

                        CERTAIN INFORMATION ABOUT UNITED

General

            United,  a New Jersey  corporation,  was organized in 1987 and began
operations in 1988 as a holding company for United National Bank ("UNB"). United
indirectly owns  additional  subsidiaries  through UNB,  including an investment
subsidiary  and a 50% interest in a financial  services  corporation.  United is
registered as a bank holding  company with the Board of Governors of the Federal
Reserve System (the "Board of Governors")  under the Bank Holding Company Act of
1956, as amended (the "Bank Holding Company Act").

            As of September 30, 1998, United had:

                            *  consolidated assets           $1.5 billion
                            *  deposits                      $1.1 billion
                            *  stockholders' equity          $126 million
                            *  loans                         $709 million

United's principal executive offices and telephone number are:

                        1130 Route 22 East
                        Bridgewater, New Jersey 08807
                        (908) 429-2200

United National Bank

            UNB, a wholly  owned  subsidiary  of United,  is a  commercial  bank
established in 1902 under the laws of the United States.  UNB is a member of the
Federal  Reserve  System and its deposits are insured by the FDIC. UNB maintains
its principal office in Bridgewater,  New Jersey and operates 28 branches in the
following New Jersey counties:

                            *  Essex
                            *  Hunterdon
                            *  Middlesex
                            *  Morris
                            *  Somerset
                            *  Union
                            *  Warren

            UNB  also  operates  over  25  automatic  teller  machines  ("ATMs")
affiliated with the MAC(R) System, an eight-state network with membership in the
Plus(R) Nationwide network and the Honor network.

            UNB provides a full range of  commercial  and retail bank  services,
including:

                       * accepting demand, savings and time deposits
                       * commercial and retail lending, primarily
                                    residential mortgages
                                    automobile loans
                                    small business loans
                                    credit card loans
                       * full personal, corporate and pension trust services
                       * other fiduciary services

                                       14

<PAGE>

                        CERTAIN INFORMATION ABOUT RARITAN

General

            Raritan is a Delaware  corporation  and a bank holding company whose
only subsidiary is The Raritan  Savings Bank ("RSB").  Raritan was formed at the
direction of RSB in connection  with its conversion  from a mutual to stock form
of organization in 1987. The sole activity of Raritan is its ownership of all of
the issued and outstanding common stock of RSB.

            At September 30, 1998 Raritan had:

                            *  consolidated assets           $433.6 million
                            *  deposits                      $359.5 million
                            *  shareholders' equity          $ 33.6 million
                            *  loans                         $306.2 million

            Raritan's principal executive offices and telephone number are:

                        454 Route 28
                        Bridgewater, New Jersey 08807
                        (908) 231-8100

The Raritan Savings Bank

            RSB is an FDIC insured, New Jersey chartered stock savings bank that
was originally  organized in 1869. Its main office is located at 9 West Somerset
Street, Raritan, New Jersey 08869, and its telephone number is 908-725-0080.  It
also operates six additional branch offices in:

                            *  Bridgewater
                            *  Manville
                            *  Martinsville
                            *  Somerville
                            *  Warren
                            *  Whitehouse Station

            RSB is engaged primarily in the business of attracting deposits from
the  general  public and  originating  residential  mortgage,  construction  and
consumer loans,  and small business loans. In addition,  a portion of its assets
is invested in securities,  including mortgage-backed  securities.  RSB offers a
wide range of services to both consumer and commercial customers. These services
include:

                       * consumer and commercial checking accounts
                       * NOW and money market accounts
                       * regular savings accounts
                       * prime performance  accounts whose rates are tied to the
                       * prime lending rate 
                       * market-rate  certificates
                       * IRA/Keogh accounts 
                       * automated teller machine ("ATM") accessibility
                       * using  the  MAC(R)  and  Plus(R)  systems
                       * real  estate mortgage loans 
                       * various consumer and commercial time and demand loans 
                       * home equity lines of credit

                                       15

<PAGE>

            RSB considers  its primary  market area for deposits to be the areas
serviced by these seven  offices,  while its primary  market area for lending is
more widespread and includes these New Jersey counties:

                       * Hunterdon
                       * Mercer
                       * Morris
                       * Middlesex
                       * Somerset
                       * Union

                               THE RARITAN MEETING

Date, Time and Place

            This document solicits,  on behalf of the Raritan Board,  proxies to
be voted at a Special Meeting of Raritan Stockholders and at any adjournments or
postponements thereof (the "Raritan Meeting").  The Raritan Meeting is scheduled
to be held:

                   [Day of Week], [Date], 199_
                   [Time]
                   Raritan Valley Country Club
                   State Highway 28
                   Somerville, New Jersey  08876

Purpose

            At the Meeting, Raritan stockholders will consider and vote on:

            * approval and adoption of the Merger Agreement
            * any other matters that may properly be brought before the meeting.

Board Recommendation

            The Raritan Board of Directors has  unanimously  approved the Merger
Agreement and  unanimously  recommends a vote "FOR" approval and adoption of the
Merger Agreement.

Required Vote

            The Merger cannot be completed without Raritan stockholder approval.

            Each share of Raritan Common Stock will be entitled to one vote upon
each matter properly submitted to the Raritan Meeting.  The affirmative vote, in
person or by proxy,  of a majority of the  outstanding  shares of Raritan Common
Stock is required in order to approve the Merger Agreement.

            The  required  vote  of  the  Raritan  stockholders  on  the  Merger
Agreement is based upon the total number of outstanding shares of Raritan Common
Stock and not upon the number of shares which are actually  voted.  Thus, if you
abstain from voting or if you don't submit a proxy card and don't vote in person
at the Raritan Meeting,  your action will have the same effect as a vote "NO" on
the Merger  Agreement.  Also, any broker non-vote will have the same effect as a
vote "NO" on the Merger Agreement.

                                       16

<PAGE>

            As of the close of business on __________, 1998 (the "Record Date"),
the directors and executive  officers of Raritan as a group  beneficially  owned
_________  shares of Raritan  Common  Stock (___% of the issued and  outstanding
shares).  (These figures are calculated  without  counting shares which could be
acquired by exercising  stock options since the shares  underlying those options
cannot be voted at the meeting.) The Raritan  directors  have agreed to vote all
the  shares  they  beneficially  own "FOR" the  Merger  Agreement.  The  Raritan
non-director  executive officers have indicated that they intend to vote all the
shares they beneficially own "FOR" the Merger Agreement.

            The matters to be  considered  at the  Raritan  Meeting are of great
importance to the stockholders of Raritan.  Accordingly, we urge you to read and
carefully   consider   the   information   presented   in   this   Joint   Proxy
Statement-Prospectus,  and to  complete,  date,  sign and  promptly  return  the
enclosed proxy in the enclosed postage paid envelope.

Record Date; Voting Rights; Proxies

            The Raritan Board has fixed the close of business on ________,  1998
as the Record Date for the Raritan  Meeting.  Only  holders of record of Raritan
Common Stock at such time will be entitled to receive notice of, and to vote at,
the Raritan Meeting.  On the Record Date, there were _________ shares of Raritan
Common Stock outstanding and entitled to vote at the Raritan Meeting.

            If you  properly  execute a proxy  card and send it to  Raritan in a
timely manner,  your proxy will be voted in accordance with the instructions you
indicate on the proxy card,  unless you revoke your proxy prior to the vote.  If
you send us a proxy card which does not  instruct  us how to vote,  your  shares
will be voted "FOR" approval and adoption of the Merger Agreement.

            The Raritan  Board is not aware of any matters that will come before
the meeting other than the vote on the Merger.  If any other matters come before
the Raritan Meeting,  the persons named on the enclosed proxy card will have the
discretion  to vote on those  matters  using  their  best  judgment,  unless you
specifically withhold that authorization when you complete your proxy card.

            You may revoke any proxy that you give at any time before it is used
to  cast  your  vote.  Simply  showing  up  at  the  Raritan  Meeting  will  not
automatically  revoke  your  proxy.  To revoke a proxy,  you must  either file a
written notice of revocation with the Raritan Corporate Secretary,  or deliver a
properly  executed proxy with a later date to the Raritan  Corporate  Secretary.
The Raritan  Corporate  Secretary  will be in attendance at the Raritan  Meeting
and, prior thereto, can be reached at the following address:

                        Helen J. Frangelli
                        Corporate Secretary
                        Raritan Bancorp Inc.
                        454 Route 28
                        Bridgewater, New Jersey  08807

            Votes  cast by proxy or in person  at the  Raritan  Meeting  will be
tabulated  by the  election  inspectors  appointed  for the  meeting,  who  will
determine  whether  or not a quorum is  present.  Where  proxies  are  marked as
abstentions,  where  stockholders  appear in person but abstain from voting,  or
where a  broker  indicates  on a  proxy  that it  does  not  have  discretionary
authority  regarding certain shares,  those  abstentions and "broker  non-votes"
will be treated as shares that are present and  entitled to vote for purposes of
determining the presence of a quorum.

                                       17

<PAGE>

Solicitation of Proxies

            In  addition  to  using  the  mails,  the  directors,  officers  and
employees  of  Raritan  may  solicit   proxies  for  the  Raritan  Meeting  from
stockholders in person or by telephone. These directors,  officers and employees
will not be specifically  compensated  for their services.  Raritan has retained
Kissel-Blake,  Inc., a proxy soliciting firm ("KBI"), to assist it in soliciting
proxies.  KBI will be paid a fee of $5,500 and will be  reimbursed  for  certain
out-of-pocket  expenses,   estimated  to  be  $2,500.  Raritan  will  also  make
arrangements with brokerage firms and other custodians, nominees and fiduciaries
to send proxy materials to their  principals and will reimburse such parties for
their  expenses in doing so.  Raritan will bear all costs of soliciting  proxies
for the Raritan Meeting.

Quorum

            The presence,  in person or by proxy,  of at least a majority of the
Raritan  Common  Stock  issued and  outstanding  and entitled to be voted at the
Raritan Meeting is necessary to constitute a quorum.

            In accordance with Raritan's  certificate of  incorporation,  record
holders of common stock who beneficially own in excess of 10% of the outstanding
shares of common  stock (the  "Limit") are not entitled to any vote with respect
to the  shares  held in excess  of the  Limit.  At the  Record  Date no  Raritan
stockholder exceeded the Limit.

                               THE UNITED MEETING

Date, Time and Place

            This document solicits, on behalf of the United Board, proxies to be
voted at a Special  Meeting of United  Shareholders  and at any  adjournments or
postponements thereof (the "United Meeting"). The United Meeting is scheduled to
be held:

                   [Day of Week], [Date], 199_
                   [Time]
                   [Street Address]
                   [City and State]

Purpose

            At the Meeting, United shareholders will consider and vote on:

            * approval and adoption of the Merger Agreement
            * any other matters that may properly be brought before the meeting.

Board Recommendation

            The United Board of Directors  has  unanimously  approved the Merger
Agreement and  unanimously  recommends a vote "FOR" approval and adoption of the
Merger Agreement.

                                       18

<PAGE>

Required Vote

            The Merger cannot be completed without United shareholder approval.

            Each share of United  Common Stock will be entitled to one vote upon
each matter properly submitted to the United Meeting.  The affirmative vote of a
majority  of the shares of United  Common  Stock  represented  and voting at the
United  Meeting in person or by proxy is required in order to approve the Merger
Agreement.

            The required vote of the United shareholders on the Merger Agreement
is  different  from  that for the  Raritan  stockholders.  The  required  United
shareholder  vote is based on the  number of shares  which are  actually  voted,
rather than the total number of outstanding shares of United Common Stock. Thus,
if you abstain from voting or if you don't submit a proxy card and don't vote in
person at the United  Meeting,  your  action will have no effect.  Also,  broker
non-votes will have no effect.

            As of the close of business on __________, 1998 (the "Record Date"),
the  directors and executive  officers of United as a group  beneficially  owned
_______  shares of United  Common  Stock  (____% of the issued  and  outstanding
shares).  (These figures are calculated  without  counting shares which could be
acquired by exercising  stock options since the shares  underlying those options
can't be voted at the meeting.) The United directors and executive officers have
indicated  that they intend to vote all the shares they  beneficially  own "FOR"
the Merger Agreement.

            We urge you to read and carefully consider the information presented
in this document,  and to complete,  date, sign and promptly return the proxy in
the postage paid envelope provided.

Record Date; Voting Rights; Proxies

            The United Board has fixed the close of business on  ________,  1998
as the Record  Date for the  United  Meeting.  Only  holders of record of United
Common Stock at such time will be entitled to receive notice of, and to vote at,
the United  Meeting.  On the Record Date,  there were ________  shares of United
Common Stock outstanding and entitled to vote at the United Meeting.

            If you  properly  execute  a proxy  card and send it to  United in a
timely manner,  your proxy will be voted in accordance with the instructions you
indicate on the proxy card,  unless you revoke your proxy prior to the vote.  If
you send us a proxy card which does not  instruct  us how to vote,  your  shares
will be voted "FOR" approval and adoption of the Merger Agreement.

            The United  Board is not aware of any matters  that will come before
the meeting other than the vote on the Merger.  If any other matters come before
the United  Meeting,  the persons named on the enclosed proxy card will have the
discretion  to vote on those  matters  using  their  best  judgment,  unless you
specifically withhold that authorization when you complete your proxy card.

            You may revoke any proxy that you give at any time before it is used
to  cast  your  vote.   Simply  showing  up  at  the  United  Meeting  will  not
automatically  revoke  your  proxy.  To revoke a proxy,  you must  either file a
written notice of revocation with the United Corporate  Secretary,  or deliver a
properly executed proxy with a later date to the United Corporate Secretary. The
United  Corporate  Secretary  will be in attendance  at the United  Meeting and,
prior thereto, can be reached at the following address:

                                       19

<PAGE>

                        Ralph L. Straw
                        Corporate Secretary
                        United National Bancorp
                        1130 Route 22 East
                        P.O. Box 6000
                        Bridgewater, New Jersey 08807-0010

            Votes  cast by proxy or in  person  at the  United  Meeting  will be
tabulated  by the  election  inspectors  appointed  for the  meeting,  who  will
determine  whether  or not a quorum is  present.  Where  proxies  are  marked as
abstentions,  where  shareholders  appear in person but abstain from voting,  or
where a  broker  indicates  on a  proxy  that it  does  not  have  discretionary
authority  regarding certain shares,  those  abstentions and "broker  non-votes"
will be treated as shares that are present and  entitled to vote for purposes of
determining the presence of a quorum.

Solicitation of Proxies

            In  addition  to  using  the  mails,  the  directors,  officers  and
employees of United may solicit proxies for the United Meeting from shareholders
in person or by telephone.  These directors,  officers and employees will not be
specifically compensated for their services. [United has retained ___________, a
proxy  soliciting  firm  ("_________"),  to  assist  it in  soliciting  proxies.
_________  will be paid a fee of  $______  and will be  reimbursed  for  certain
out-of-pocket   expenses,   estimated  to  be  $___.]   United  will  also  make
arrangements with brokerage firms and other custodians, nominees and fiduciaries
to send proxy materials to their  principals and will reimburse such parties for
their expenses in doing so. United will bear all costs of soliciting proxies for
the United Meeting.

Quorum

            The presence,  in person or by proxy,  of at least a majority of the
United  Common  Stock  issued and  outstanding  and  entitled to be voted at the
United Meeting is necessary to constitute a quorum.

                               THE PROPOSED MERGER

            A copy of the Merger  Agreement  is  attached  as Appendix A to this
Joint  Proxy  Statement-Prospectus  and is  incorporated  by  reference  herein.
Descriptions  of the Merger  and the Merger  Agreement  are  qualified  in their
entirety by reference to the Merger Agreement.

General Description; Certain Defined Terms

            The Merger  Agreement  provides  for the merger of Raritan  with and
into United (the "Merger"), with United as the surviving entity. A closing under
the Merger Agreement (the "Closing") is to occur on the tenth business day after
the day when all material conditions to closing (including receipt of regulatory
approvals  and the  expiration  of  regulatory  waiting  periods) have been met.
However, United and Raritan may agree on a different closing date. In the Merger
Agreement  and in this  document,  the actual  date of the closing is called the
"Closing  Date" and the date on which the  material  conditions  to closing have
been met (i.e.,  all  conditions  are met other than delivery of documents to be
delivered  at the  closing)  is called the  "Determination  Date".  The  parties
currently  anticipate  closing in January 1999. The Merger will become effective
at the time (the  "Effective  Time")  specified in  certificates of merger which
United will file with the New Jersey and Delaware Secretaries of State following
the Closing.  United and Raritan  anticipate that the Effective Time will be the
close  of  business  on the  Closing  Date.  Immediately  after  the  Merger  is
effective,  United will merge RSB with UNB (the "Bank Merger"),  with UNB as the
surviving  entity.  The exact Closing Date and Effective Time are dependent upon
satisfaction  of numerous  conditions,  some of which are not under  United's or
Raritan's control.

                                       20

<PAGE>

Consideration; Cash instead of Fractional Shares

            At the Effective  Time,  each  outstanding  share of Raritan  Common
Stock (except for Excluded  Shares) will be converted  into the right to receive
1.595 shares (the "Exchange  Ratio") of United Common Stock.  "Excluded  Shares"
are those  shares of  Raritan  Common  Stock  which (i) are held by  Raritan  as
treasury shares,  or (ii) are held by United or any of its  subsidiaries  (other
than  shares  held as  trustee or in a  fiduciary  capacity  and shares  held as
collateral on or in lieu of a debt  previously  contracted).  The 1.595 Exchange
Ratio  takes into  account an  adjustment  made to  reflect  United's  10% stock
dividend  paid on  November 2, 1998 (the "1998 Stock  Dividend").  The  Exchange
Ratio is subject to further  adjustment  to take into  account any stock  split,
stock  dividend  or similar  transaction  with  respect to United  Common  Stock
between  the date of the Merger  Agreement  and the  Effective  Time (a "Capital
Change").  The Exchange  Ratio is also subject to adjustment as described  under
"Amendments; Termination" on pages 34-36.

            Instead  of  fractional  shares  of  United  Common  Stock,  Raritan
stockholders  will  receive,  without  interest,  a cash  payment  equal  to the
fractional  share interest to which they would otherwise be entitled  multiplied
by  the  Average   Pre-Closing  Price  of  United  Common  Stock.  The  "Average
Pre-Closing  Price"  means the  average of the closing  prices of United  Common
Stock as supplied  by Nasdaq for the ten  consecutive  trading  days ending with
(and including) the Determination Date. The Average Pre-Closing Price is subject
to  anti-dilution  adjustment  in the event of a Capital  Change.  All shares of
United  Common Stock to be issued to a Raritan  stockholder  will be combined to
make as many whole  shares as possible  before  calculating  that  stockholder's
fractional share interest.

            The price of United Common Stock at the Effective Time may be higher
or  lower  than  the  market  price at the  time of  entering  into  the  Merger
Agreement, the time of mailing this Joint Proxy  Statement-Prospectus,  the time
of the Raritan Meeting or the time  certificates  representing  shares of United
Common  Stock are  delivered  in  exchange  for shares of Raritan  Common  Stock
following  consummation  of the  Merger.  We urge you to obtain  current  market
quotations for the United Common Stock and the Raritan Common Stock.

Conversion of Raritan Options

            The  Merger  Agreement  provides  that  each  outstanding  option to
purchase  Raritan  Common Stock granted under the Raritan stock option plan will
be  converted at the  Effective  Time into an option to purchase  United  Common
Stock. The terms of the new option will be determined as follows:

          * the right to purchase shares of Raritan Common Stock pursuant to the
            old option  will be  converted  in the new option  into the right to
            purchase   that  same  number  of  shares  of  United  Common  Stock
            multiplied by the Exchange Ratio,

          * the option  exercise  price per share of United Common Stock will be
            the previous option exercise price per share of Raritan Common Stock
            divided by the Exchange Ratio, and

          * in all other material respects the new option will be subject to the
            same terms and conditions as governed the old option on which it was
            based,  including  the length of time within which the option may be
            exercised.

                                       21

<PAGE>

            United  has  reserved  for  issuance  the number of shares of United
Common Stock  necessary to satisfy  United's  obligations  under such  converted
options,  and has agreed to register such shares  pursuant to the Securities Act
as soon as practicable  after the Effective  Time, but in no event later than 45
days after the  Effective  Time.  As of the  Record  Date,  there  were  options
outstanding  for _______ shares of Raritan Common Stock which would be converted
in the Merger as described above.

Background of and Reasons for the Merger

            Background of the Merger. As part of its ongoing strategic planning,
the Raritan Board has regularly  reviewed the merger and acquisition market as a
possible means of providing value to stockholders.  Endicott Financial Advisors,
L.L.C. ("Endicott") has been engaged by Raritan as financial advisor since 1996.
In the spring and summer of 1998 the Board reviewed with Endicott the continuing
consolidation  activity taking place in the banking  industry  nationwide and in
particular  in the  Mid-Atlantic  market  area.  Among other  things,  the Board
discussed the increasing  size of competitors and the benefits that an increased
scale  of  operation   contribute  to   supporting   product   innovations   and
technological improvements.
During  this  period,  the  Board  discussed  whether  it  would be  timely  and
appropriate  for the  company  to  contact  a select  group of  possible  merger
partners to determine whether there was interest at an acceptable pricing level.

            At a special meeting on August 13, Endicott discussed with the Board
the reasons why a merger  transaction may be an advantageous  alternative at the
present time and in the current market.  Counsel  addressed the fiduciary duties
of a board of directors in general and in particular in connection  with mergers
and acquisitions.  After extensive discussion,  the Board authorized Endicott to
approach a selected group of five companies (one of which was United) to inquire
as to their  interests in an  acquisition  of Raritan.  After all five companies
entered into  confidentiality  agreements with Raritan,  certain information was
provided to them, and they were asked to respond within a two week time-frame as
to their  interest and with a  preliminary  pricing  level.  At a special  Board
meeting on September 3,  Endicott  reported as to the  responses  received:  two
companies were not interested; one was interested in Raritan but only if another
acquisition  could be accomplished  at the same time; and two companies,  one of
which was United,  were  interested in a stock for stock  transaction.  Endicott
reviewed the  profile,  historically  and on a pro forma  basis,  of each of the
companies that had expressed any interest.  After  questions and  discussion,  a
Special Board meeting was scheduled for September 8 to decide how and whether to
proceed with the expressions of interest.

            On September 8 the Board again  reviewed  with  Endicott and counsel
the  expressions of interest and determined to pursue merger  negotiations  with
United,  based in part on the proposed  fixed  exchange  ratio of 1.45 shares of
United  Common  Stock  for each  share of  Raritan  Common  Stock  (1.595  after
adjustment for United's  subsequent  stock  dividend),  the trading price of the
companies that had expressed interest,  and the historical and pro forma profile
of the  companies.  The Board directed  Raritan  management to invite the senior
management  of United,  as well as their  financial  advisors,  to meet with the
Board on September 15 for the purpose of discussing  United's strategic plan and
its goals with  respect to a possible  acquisition  of Raritan.  On September 15
Thomas Gregor, Chairman, President and Chief Executive Officer of United, Donald
Malwitz,  Vice President and Treasurer of United, and Warren Gerleit,  Executive
Vice  President  and  Chief  Lending  Officer  of UNB,  together  with  United's
financial  advisors,  made a presentation  to the Raritan Board and responded to
questions. Following this presentation, and after the United representatives had
departed, the Board further discussed the prospects of a merger with United, and
concluded by authorizing  management,  along with Endicott and legal counsel, to
negotiate  a merger  agreement  based on terms  discussed  by the  Board  and to
conduct a due diligence investigation of United.

                                       22

<PAGE>

            At a special Board meeting on September  20,  Raritan's  counsel and
financial  advisor  reviewed with the Board the terms of preliminary  merger and
stock option agreements and the transactions contemplated thereby, the potential
financial  and  strategic  benefits  of  the  transaction,  the  results  of due
diligence reviews,  financial and valuation analyses of the transactions and the
terms of the proposed  transaction  agreements,  including  the Exchange  Ratio.
Counsel  again  discussed the  fiduciary  duties of a board in  connection  with
merger transactions.  At a September 21 special meeting, the Board reviewed with
counsel  and  Endicott  the  revised  merger  documents.   The  United  proposal
contemplated a stock for stock exchange at a fixed exchange ratio of 1.45 shares
of United for each share of Raritan  (subject to adjustment for stock splits and
dividends,  and  subsequently  adjusted to 1.595 to reflect  United's  10% stock
dividend).  Based on a closing sales price per share of United Common Stock, the
Exchange Ratio equated to a value at that time of  approximately  $35. The Board
was also  advised  that a written  proposal  had been  received  from one of the
companies  that had earlier  indicated  an interest in acquiring  Raritan.  That
proposal  contemplated a stock for stock  exchange at a floating  exchange ratio
that was designed to provide $35 of value to each Raritan stockholder.  Endicott
reviewed the proposal from a financial point of view, and after discussion,  the
Board  determined that the proposed merger with United was a better  transaction
for stockholders.  Endicott rendered its opinion that the Exchange Ratio for the
merger with United was fair to Raritan  stockholders  from a financial  point of
view.  Finally,  the Board was informed  that only minor  issues  remained to be
resolved  in the  documents  and that it was likely that  definitive  agreements
would be presented for execution the next morning.  The Board determined to meet
again in the morning,  at which time they were  informed by counsel and Endicott
that a definitive merger agreement and related documents had been satisfactorily
negotiated.  At the  September  21  meeting,  the  Raritan  Board  of  directors
unanimously  adopted and approved the Merger,  the Merger Agreement,  the Option
Agreement and the transactions contemplated thereby.

            Reasons for the Merger.  The Raritan Board has  determined  that the
Merger  and the Merger  Agreement  are fair to,  and in the best  interests  of,
Raritan and its stockholders. In reaching its determination, the Board consulted
with Endicott  regarding the financial  aspects and fairness of the transaction.
In arriving at its determination,  the Board also considered a number of factors
which  indicated  that the Merger  should  produce an  institution  that is well
capitalized,  and one which will enjoy an  enhanced  operational  and  strategic
value and that should  foster the  potential  for earnings  growth.  The factors
considered by the Board included, but were not limited to, the following:

            (i)  Information  concerning  the  business,  earnings,  operations,
financial condition,  prospects, capital levels and asset quality of Raritan and
United, both individually and as combined.

            (ii) The  financial  advice  rendered by Endicott  that the Exchange
Ratio is fair, from a financial point of view, to Raritan stockholders.

            (iii) The terms of the Merger  Agreement,  the Option  Agreement and
the other documents executed in connection with the Merger.

            (iv) The anticipated cost savings and efficiencies  available to the
combined company as a result of the Merger.

            (v) The current and prospective economic, competitive and regulatory
environment facing Raritan in particular and financial institutions in general.

            (vi) The fact  that the two  members  of the Board of  directors  of
Raritan would become directors of United.

                                       23

<PAGE>

            (vii) The  results of the due  diligence  investigations  of United,
including  assessments of credit  policies,  asset quality,  interest rate risk,
litigation and adequacy of loan loss reserves.

            (viii) The expectation  that the Merger would be tax free to Raritan
stockholders for federal income tax purposes.

            (ix) The nature and  compatibility of the respective  management and
business philosophies of Raritan and United.

            (x) The prospects for growth and expanded products and services, and
other anticipated  impacts on depositors,  employees,  customers and communities
served by Raritan.

            (xi)  The  pro  forma  ownership  of  the  combined  company  by the
stockholders of Raritan.

            In  reaching  their  determinations  to approve  and  recommend  the
Merger,  the Board did not assign any specific or relative weights to any of the
foregoing factors,  and individual directors may have given differing weights to
different factors.

            Recommendations  of the Raritan  Board of Directors  and Reasons for
the Merger

            The Raritan  Board  believes  that the Merger is fair to, and in the
best  interests  of,  Raritan  and  its  stockholders.  Accordingly,  the  Board
unanimously approved the Merger Agreement and Merger and recommends that Raritan
stockholders  vote FOR the  approval and  adoption of the Merger  Agreement  and
Merger.

            THE  RARITAN  BOARD OF  DIRECTORS  UNANIMOUSLY  RECOMMENDS  THAT THE
MERGER AGREEMENT AND THE MERGER BE APPROVED BY ALL STOCKHOLDERS OF RARITAN.

            United's Reasons for the Merger

            United  entered  into the Merger  Agreement  with Raritan as part of
United's  ongoing strategy of growth through  acquisitions in contiguous  market
areas.  The United Board of Directors also believes the merged  institution will
be a more  efficient  and capable  competitor  in view of the  evolution  of the
financial services industry.

Interests of Certain Persons in the Merger

            In considering the recommendation of the Raritan Board regarding the
Merger,  Raritan stockholders should know that certain directors and officers of
Raritan  have  interests  in the  Merger  in  addition  to  their  interests  as
stockholders of Raritan.  All those additional interests are described below, to
the extent they are  material  and are known to Raritan.  The Raritan  Board was
aware of these interests and considered them, among other matters,  in approving
the Merger Agreement:

            Board Membership; Advisory Board. The Merger Agreement provides that
United and UNB will each appoint  Arlyn D. Rus and another  Raritan  designee to
its Board of Directors as of the Effective  Time.  Raritan has  designated,  and
United has accepted,  William T. Kelleher,  Jr., as the second designee. Mr. Rus
is currently the Chairman, President and Chief Executive Officer of Raritan. The
Merger  Agreement  also provides that Mr. Rus will serve as Vice Chairman of the
Board of United.  The Merger Agreement provides that UNB will create an advisory
Board of  Directors  and  invite all then  directors  of Raritan to serve on the
advisory  board as of the Effective  Time.  Advisory  board members will receive
fees which are expected to total no more than $__________ annually per director,
less (in the case of Mr. Rus and Mr. Kelleher) any fees they receive for service
as directors of United.

                                       24

<PAGE>

            Stock  Benefits.  At the Effective  Time,  each  outstanding  option
granted under Raritan's 1993 Stock Option Plan for Outside  Directors,  its 1993
Incentive  Stock Option Plan or its 1997 Long-Term  Incentive Stock Benefit Plan
will  be  converted  into  an  option  to  purchase  United  Common  Stock.  All
outstanding,  non-vested  options will vest as a result of the Merger.  See " --
Conversion of Raritan Options" on pages 21 - 22.

            Indemnification;   Directors  and  Officers.  The  Merger  Agreement
requires  United to  indemnify,  for a period of six years  after the  Effective
Time,  each director and officer of Raritan and RSB to the fullest  extent which
Raritan  and  RSB  would  have  been  permitted  under  applicable  law  and its
Certificate  of  Incorporation  and  By-laws  had the Merger not  occurred.  The
indemnification  is to cover any claims made against  such person  because he or
she served as a director or officer of Raritan or RSB, or acted as a director or
officer of a third  party at the written  request of Raritan or RSB.  The Merger
Agreement  also  requires  United to  provide  Raritan  and RSB's  officers  and
directors  with  directors' and officers'  liability  insurance for at least six
years after the Effective Time upon terms and conditions  substantially  similar
to Raritan's existing directors' and officers' insurance policy.

            Employment Agreements with Executive Officers.  Raritan and RSB have
employment agreements with Arlyn D. Rus, Chairman, President and Chief Executive
Officer, and Thomas F. Tansey, Executive Vice President, Chief Operating Officer
and Treasurer.  The agreements  both provide that in the event of termination of
employment  upon a change of control of Raritan,  the executive is entitled to a
severance payment equal to 36 times the highest monthly compensation paid to him
plus a "special retirement benefit". The special retirement benefit is an amount
intended to compensate the executive for any reduced  retirement  benefits under
the Raritan  pension plan.  UNB and Raritan have agreed that Raritan will pay to
Mr. Rus and Mr. Tansey their severance payments and special retirement benefits,
estimated to be [_________] and [_________],  respectively,  in a lump sum at or
prior to the  Effective  Time.  In  addition,  UNB and  Raritan  have  agreed to
indemnify  the  executives  for the  amount of any  excise  tax  imposed on such
payments  under Section 280G of the Internal  Revenue Code of 1986. UNB has also
agreed to pay for and provide to Mr. Rus and Mr. Tansey  medical,  life,  dental
and disability  benefits  substantially  identical to the coverage maintained by
Raritan  until age 65, and  thereafter,  to  provide  such  benefits  with a 50%
co-payment by each of the executives.

            Special  Termination  Agreement.  Raritan  and  RSB  have a  special
termination  agreement  with John J. Lukens,  Senior Vice  President  and Senior
Lending Officer,  which requires Raritan to pay a cash severance  benefit to Mr.
Lukens if, following a change in control,  the company terminates his employment
other than for cause, or if he voluntarily terminates his employment following a
demotion, a loss of title, office or significant  authority, a reduction in base
compensation  or a relocation of his principal  place of employment by more than
25 miles. It is currently  anticipated that Raritan, with United's consent, will
pay Mr.  Lukens  the  cash  severance  payment  under  the  special  termination
agreement,  estimated to be [_______],  at or prior to the Effective  Time,  and
that following the Effective Time UNB will pay for and provide health, life and
disability insurance coverage in accordance with the terms of the agreement.

            Supplemental  Executive  Retirement  Plans.  Raritan  and  RSB  have
established  supplemental  retirement plans ("SERPs") for the benefit of Messrs.
Rus,  Tansey and Lukens.  Under the SERPs,  Raritan and RSB are required to make
certain payments to each executive over a period of 15 years. The amount of such
payments  are  determined  based  on a  percentage  of  their  respective  final
salaries.  Raritan and RSB are also  obligated  under the SERPs to fund  certain
secular trusts  established for each of these  executives.  UNB and Raritan have
agreed that Raritan will make  payments  equal to the present  value of the cash
contributions  necessary to fund the secular  trusts of Messrs.  Rus and Tansey,
which payments are estimated to be [________] and [________], respectively. Such
payments  will be made at or before the  Effective  Time.  UNB and Raritan  have
agreed that Raritan will make similar payments with respect to Mr. Lukens unless
UNB offers a position to him on or before  December 15, 1998 and a new agreement
is mutually  agreed  upon by UNB and Mr.  Lukens.  The  estimated  payment  with
respect to Mr. Lukens is [________].

                                       25

<PAGE>

            Director Deferred Compensation Plan. Raritan and RSB have a Director
Deferred Compensation Plan pursuant to which its directors have elected to defer
payment of certain of their  board and  committee  fees.  UNB and  Raritan  have
agreed that Raritan will  transfer,  at or prior to the Effective  Time,  liquid
assets into a trust to ensure that the plan  benefits  will be paid  without the
need to obtain cash  withdrawals  from the life  insurance  policies held by the
trust.

            Share Ownership. As of the Record Date, the directors of Raritan and
RSB  beneficially  owned in the aggregate  approximately  ___% of the issued and
outstanding  shares of Raritan Common Stock. In connection with the execution of
the Merger  Agreement,  the directors of Raritan and RSB agreed to vote in favor
of the Merger Agreement.  As of the Record Date,  executive  officers of Raritan
who are not  also  directors  beneficially  owned in the  aggregate  ___% of the
issued and outstanding shares of Raritan Common Stock.

Opinion of Raritan's Financial Advisor

            In deciding to approve the Merger,  Raritan's  Board  considered the
oral opinion rendered by its financial advisor  Endicott,  on September 20, 1998
(the  "September  Opinion") that the Exchange  Ratio was fair,  from a financial
point of view, to the  shareholders of Raritan as of that date. That opinion was
updated and rendered in written form as of  ____________,  1998, and is attached
as Annex C to this Joint Proxy  Statement-Prospectus.  We encourage  you to read
this opinion.

Opinion of Raritan's Financial Advisor

            Since April 1996,  Endicott has formally acted as financial  advisor
to Raritan on a  contractual  basis.  Endicott was  retained to provide  general
financial  advisory  services  and  also  to  specifically   advise  Raritan  in
connection with its strategic planning and merger and acquisition activities.

            The investment  banking business of Endicott  includes  valuation of
financial  institutions  and their  securities  in  connection  with mergers and
acquisitions and other corporate transactions.  The Raritan Board chose Endicott
because  of  its  expertise,  experience  and  familiarity  with  the  financial
institutions industry.

            In connection  with its acting as financial  advisor to Raritan,  at
the September  20, 1998 meeting at which the Raritan  Board  approved the Merger
Agreement, Endicott delivered its oral opinion to the Raritan Board, that, as of
such date, the Exchange Ratio was fair,  from a financial  point of view, to the
holders of shares of Raritan  Common Stock.  Endicott has delivered to Raritan a
written  opinion  (the  "Proxy  Opinion")  dated  the date of this  Joint  Proxy
Statement-Prospectus that, as of the date of such opinion, the Exchange Ratio is
fair from a financial  point of view, to the holders of Raritan's  Common Stock.
The full text of the Proxy Opinion is attached as Appendix C to this Joint Proxy
Statement-Prospectus and is incorporated herein by reference. The description of
such  opinion set forth  herein is  qualified  in its  entirety by  reference to
Appendix C. Holders of Raritan  Common Stock are urged to read the Proxy Opinion
in its entirety for a description of the procedures followed,  assumptions made,
matters  considered and  qualifications  on the review undertaken by Endicott in
connection  herewith.  The Proxy Opinion is directed only to the Exchange  Ratio
and does not constitute a recommendation to any stockholder of Raritan as to how
such shareholder should vote at the Raritan Meeting.

                                       26

<PAGE>

            No  limitations  were imposed on Endicott by the Raritan  Board with
respect  to the  investigation  made  or  procedures  followed  by  Endicott  in
rendering  its fairness  opinion.  In  connection  with  rendering  its fairness
opinion  to the  Raritan  Board,  Endicott  performed  a  variety  of  financial
analyses.  The  following  is a  summary  of  the  material  financial  analyses
performed by Endicott. Endicott believes that its analyses must be considered as
a whole and that selecting  portions of such analyses and the factors considered
therein,   without  considering  all  factors  and  analyses,  could  create  an
incomplete  view of the  analyses  and the  processes  underlying  the  fairness
opinion of Endicott.  The preparation of a fairness opinion is a complex process
involving  subjective  judgments and is not  necessarily  susceptible to partial
analyses  or  summary  description.  In its  analyses,  Endicott  made  numerous
assumptions  with  respect  to  industry  performance,   business  and  economic
conditions  and various other  matters,  many of which are beyond the control of
Raritan and United.  Any  estimates  contained  in  Endicott's  analyses are not
necessarily  indicative of future results or values,  which may be significantly
more or less favorable than such estimates.  Estimates of values of companies do
not  purport to be  appraisals  or  necessarily  reflect the prices at which the
companies or their securities may be sold.

            The following is a summary of selected analyses prepared by Endicott
and presented to the Raritan Board in connection with the September  Opinion and
analyzed by Endicott in connection with the September Opinion and Proxy Opinion.
In connection  with  delivering  the Proxy  Opinion,  Endicott  updated  certain
analyses  described  below to  reflect  certain  market  conditions  and  events
occurring since the date of the September Opinion.  Such reviews and updates led
Endicott to conclude that it was not necessary to change the  conclusions it had
reached in connection with rendering the September Opinion.

Analysis of Publicly Traded Companies

            In preparing its  presentation,  Endicott  used  publicly  available
information to compare selected financial and market information, including book
value,  tangible book value,  earnings,  asset quality ratios, loan loss reserve
levels,  profitability and capital adequacy for United and other publicly traded
regional  commercial banks located in the Mid-Atlantic  United States. This peer
group consisted of institutions ranging in assets from $1 billion to $2 billion.
Endicott used similar data for nationwide  high-performing  commercial  banks in
the same  asset  size  range  that had a return  on equity  for the last  fiscal
quarter of greater  than 15% and a  price-to-tangible  book value  greater  than
200%. Endicott reviewed the historical financial  information for United and the
median value for each group since December 1993.  Endicott calculated a range of
imputed  stock market  valuation of United  Common Stock based on the  valuation
multiples of the selected peer groups at December 31, 1997,  June 30, 1998,  and
September  15, 1998.  The range for December 31, 1997 was $29.24 to $36.78,  for
June 30,  1998 was $30.98 to $40.05,  and for  September  15, 1998 was $25.58 to
$32.82.

            Separately,  Endicott  performed a similar  analysis for Raritan and
comparable publicly traded companies.  The peers consisted of a group of savings
institutions located in the Mid-Atlantic States with assets ranging between $200
million and $600 million and nationwide  high  performing  savings  institutions
within the same asset size range with  return on equity  greater  than 12.5% and
price-to-tangible  book value greater than 150%.  Endicott calculated a range of
imputed  stock market  valuation of Raritan  Common Stock based on the valuation
multiples of the selected peer groups at December 31, 1997,  June 30, 1998,  and
September  15, 1998.  The range for December 31, 1997 was $18.23 to $30.30,  for
June 30,  1998 was $19.54 to $29.68,  and for  September  15, 1998 was $15.62 to
$23.40.

                                       27

<PAGE>

Analyses of Selected Merger Transactions

            Endicott  reviewed  merger and  acquisition  transactions  announced
since January 1, 1990  involving  public savings  institutions  as acquirees and
having a transaction value over $15 million (each a "Transaction").  Among those
reviewed were: (i) Transactions  announced between January 1, 1998 and September
9, 1998 ("1998 Nationwide Transactions"), and (ii) Transaction involving savings
institutions  located in the Mid-Atlantic  States  announced  between January 1,
1998 and September 8, 1998 ("1998 Regional Transactions"). Endicott reviewed the
price to last twelve  months  earnings,  price to book value,  price to tangible
book value, price to deposits, price to assets, and deposit premium paid in each
such  transaction  and computed high,  low, mean, and median ratios and premiums
for the respective group of transactions.  Endicott's  computations  yielded the
following  median  multiples for the 1998 Nationwide  Transactions  and the 1998
Regional  Transactions,  respectively,  as compared with the following indicated
multiples for the Merger:  (i) price to last twelve months earnings multiples of
26.12x and 26.72x, compared with 24.36x for the Merger; (ii) price to book value
of 220.8% and 205.1% as  compared  with  285.0% for the  Merger;  (iii) price to
tangible book value of 222.0% and 205.1%, compared to 288.4% for the Merger, and
(iv) core  deposit  premiums of 21.6% and 21.3% as  compared  with 20.0% for the
Merger.  Based  upon the  median  multiples  for 1998  Nationwide  Transactions,
Endicott derived an imputed range of values per share of Raritan Common Stock of
$27.19  to  $43.02.   Based  upon  the  median  multiples  for  1998  Nationwide
Transactions,  Endicott  derived an imputed range of values per share of Raritan
Common Stock of $27.52 to $43.02.

            No  company  or  transaction,  however,  used  in this  analysis  is
identical  to  Raritan,  United or the Merger.  Accordingly,  an analysis of the
result  of the  foregoing  is not  mathematical;  rather,  it  involves  complex
considerations and judgments  concerning  differences in financial and operating
characteristics  of the companies and other factors that would affect the public
trading values of the companies or company to which they are being compared.

            In  addition  to  the  analysis  of  selected  merger  transactions,
Endicott  reviewed the stock market  performance of the most active acquirers of
banks in the country. Endicott considered the impact that the recent drop in the
value of the  stocks  of such  acquiring  companies  would  have on  merger  and
acquisition pricing in the near future.

Discounted Earnings, Dividend Stream and Terminal Value Analysis

            Using a discount  earnings,  dividend  stream,  and  terminal  value
analysis,  Endicott  estimated the future stream of earnings  flows that Raritan
could be expected to produce through 2004 under various growth  assumptions.  To
approximate the terminal value of Raritan Common Stock at the end of the period,
Endicott  applied  price to earnings  multiples  of between  10.0x and 22.0x and
price to tangible book value  multiples of between 100% and 300%. The net income
streams  and  terminal  values  were then  discounted  to present  values  using
different discount rates chosen to reflect different  assumptions  regarding the
required rates of return  holders of prospective  buyers of Raritan Common Stock
would  expect.  This  analysis  assumed that Raritan  continued its current cash
dividend policy and indicated a reference range of between $15.27 and $43.41 per
share.  When a 10.0%  discount  rate  was  applied  to  expected  merger  market
multiples,  the  analysis  indicated a  reference  range of $29.09 to $37.84 per
share.

                                       28

<PAGE>

Pro Forma Merger Analysis

            Endicott performed pro forma merger analyses that combined Raritan's
and United's current and projected  incomes and balance sheets based on earnings
forecasts  of  Raritan  and United  management,  respectively.  Assumptions  and
analyses  of  the  accounting  treatment,  acquisitions  adjustments,  operating
efficiencies and other  adjustments were made to arrive at a base case pro forma
analysis to determine the effect of the  transaction on both Raritan and United.
Endicott noted that, based on a $36.25 per share price for each share of Raritan
Common  Stock,  the impact of the Merger on United's  earnings per share did not
appear to be  material  while  there was an initial  10%  dilution  to  United's
tangible book value per share based on such forecasts.

            In connection  with  rendering  its September  Opinion and the Proxy
Opinion,  Endicott reviewed and considered,  among other things:  (a) the Merger
Agreement;  (b)  audited  consolidated  financial  statements  and  management's
discussion  and analysis of financial  condition and results of  operations  for
Raritan for the three fiscal years ending December 31, 1995,  December 31, 1996,
December 31, 1997 and the unaudited consolidated financial statements of Raritan
for the periods ending March 31, 1998, June 30, 1998 and September 30, 1998; (c)
audited  consolidated  financial  statements  and  management's  discussion  and
analysis of financial  condition  and results of  operations  for United for the
three fiscal years ended December 31, 1995,  December 31, 1996, and December 31,
1997 and the  unaudited  consolidated  financial  statements  of United  for the
periods  ending  March 31,  1998,  June 30, 1998 and  September  30,  1998;  (d)
financial  analyses  and  forecasts  for United and  Raritan  prepared by and/or
reviewed with the respective  management's of Raritan and United,  (e) the views
of senior  management of Raritan and United of their respective past and current
business operations,  results thereof, financial condition and future prospects;
(f) certain  reported  price and trading  activity for Raritan  Common Stock and
United  Common  Stock,  including a comparison  of certain  financial  and stock
market  information for Raritan and United with similar  information for certain
other companies the securities of which are publicly  traded;  (g) the financial
terms of recent business combinations in the banking industry; (h) the pro forma
impact  of the  transaction  on  United;  (i)  the  current  market  environment
generally  and  the  banking  environment  in  particular;  and (j)  such  other
information,  financial  studies,  analyses and  investigations  and  financial,
economic and market criteria which Endicott considered relevant.

            Pursuant to the Endicott Agreement, Raritan retained Endicott to act
as independent  financial advisor,  to render general advisory services and also
to  specifically  advise Raritan in connection  with its strategic  planning and
merger and acquisition activities.  Pursuant to the Endicott Agreement,  Raritan
paid Endicott a fee for rendering its fairness opinion relating to the Merger at
the September 20, 1998 meeting of the Raritan Board.  In addition,  and pursuant
to the terms of the Endicott Agreement, Raritan will pay Endicott at transaction
fee equal to 1.0 % of the aggregate transaction value of the consideration to be
paid by United in the  Merger,  (calculated  at the  Effective  Time),  of which
approximately  25% was paid upon the  signing  of the Merger  Agreement  and the
remaining portion is payable at the closing of the Merger. Based upon the merger
closing as contemplated in the Merger Agreement,  Endicott would be paid a total
transaction  fee of  approximately  one  million  dollars  for its  services  in
connection  with the Merger.  Raritan has also agreed to reimburse  Endicott for
its reasonable  out-of-pocket  expense in connection  with its engagement and to
indemnify Endicott and its affiliates and their respective partners,  directors,
officers, employees, agents and controlling persons against certain expenses and
liabilities, including liabilities under securities laws.

                                       29

<PAGE>

Resale Considerations Regarding United Common Stock

            The shares of United  Common Stock that will be issued if the Merger
is consummated have been registered under the Securities Act of 1933, as amended
(the "Securities  Act").  These registered  shares will be freely  transferable,
except for  shares  received  by  persons,  including  directors  and  executive
officers of Raritan,  who may be deemed to be "affiliates" of Raritan under Rule
145 promulgated under the Securities Act. An "affiliate" of an issuer is defined
generally as a person who "controls" the issuer.  Directors,  executive officers
and 10%  shareholders  may be deemed to control the issuer.  Affiliates  may not
sell their shares of United Common Stock acquired pursuant to the Merger, except
pursuant  to an  effective  registration  statement  under  the  Securities  Act
covering  the  United  Common  Stock or in  compliance  with Rule 145 or another
applicable exemption from the registration requirements of the Securities Act.

            Persons  who  may be  deemed  to be  "affiliates"  of  Raritan  have
delivered letters to United in which they have agreed to certain restrictions on
their ability to sell, transfer or otherwise dispose of ("transfer") any Raritan
Common Stock owned by them and any United  Common Stock  acquired by them in the
Merger. Pursuant to the accounting rules governing a pooling of interests,  such
persons  have agreed not to transfer the shares  during the period  beginning 30
days  prior to the  Effective  Time and  ending  on the date on which  financial
results covering at least 30 days of post-merger  combined  operations of United
and Raritan have been published or filed by United. Also, in connection with the
pooling of  interests  rules,  such  persons  have agreed not to transfer  their
Raritan  Common Stock in the period prior to 30 days before the  Effective  Time
without  giving  United  advance  notice  and an  opportunity  to  object if the
transfer would  interfere  with pooling of interests  accounting for the Merger.
Pursuant to Rule 145, such persons have also agreed to refrain from transferring
United Common Stock  acquired by them in the Merger,  except in compliance  with
certain restrictions imposed by Rule 145.  Certificates  representing the shares
of United Common Stock acquired by each such person  pursuant to the Merger will
bear a legend  reflecting  that the shares are restricted in accordance with the
letter  signed by such person and may not be  transferred  except in  compliance
with such restrictions.

            Persons who may be deemed "affiliates" of United have also delivered
letters to United in which they have agreed not to transfer  United Common Stock
beneficially owned by them in violation of the pooling of interests restrictions
set forth above with respect to Raritan.

Conditions to the Merger

            The  obligation of each party to consummate the Merger is subject to
satisfaction or waiver of certain conditions, including:

          * approval of the Merger  Agreement by the shareholders of Raritan and
            United

          * receipt of all necessary consents, approvals and authorizations from
            federal  and  state  government   authorities  (see  "--  Regulatory
            Approvals" on page 33)

          * absence  of any  litigation  that would  restrain  or  prohibit  the
            consummation of the Merger

          * receipt of a letter from United's independent  accountants regarding
            qualification  of the Merger for  pooling  of  interests  accounting
            treatment

          * receipt of an opinion of Pitney,  Hardin, Kipp & Szuch regarding the
            tax-free   nature  of  the  Merger  (see  "--  Federal   Income  Tax
            Consequences" on page 36-37)

                                       30

<PAGE>

            The   obligation  of  United  to  consummate   the  Merger  is  also
conditioned on, among other things:

          * continued accuracy of the  representations and warranties of Raritan
            contained in the Merger Agreement (subject to a materiality "out")

          * performance by Raritan, in all material respects, of its obligations
            under the Merger Agreement

            The   obligation  of  Raritan  to  consummate  the  Merger  is  also
conditioned on, among other things:

          * continued accuracy of the  representations  and warranties of United
            contained in the Merger Agreement (subject to a materiality "out")

          * performance by United, in all material respects,  of its obligations
            under the Merger Agreement

          * receipt by Raritan of the  opinion  letter from  Endicott  (which is
            Appendix C)

          * Messrs.  Rus and Kelleher being appointed as directors of United and
            UNB

Conduct of Business Pending the Merger

            The Merger Agreement  requires Raritan to conduct its business prior
to the  Effective  Time only in the ordinary  course of business and  consistent
with prudent banking  practices,  except as permitted under the Merger Agreement
or with the written consent of United.  Under the Merger Agreement,  Raritan has
agreed not to take certain  actions  without the prior written consent of United
or unless permitted by the Merger Agreement,  including, among other things, the
following:

          * change any  provision  of its charter,  bylaws or similar  governing
            documents

          * issue new stock,  grant an option, or declare,  set aside or pay any
            dividend other than Raritan's regular quarterly cash dividends up to
            $0.15 per share

          * grant anyone  severance or termination  pay (other than as disclosed
            to United or as agreed  to by United in  writing)  or enter  into or
            amend any employment agreement

          * adopt  any new  employee  benefit  plan,  or award any  increase  in
            compensation  or benefits  (other than as  disclosed to United or as
            agreed to by United in writing)

          * file any applications or make any contracts  regarding  branching or
            site location or relocation

          * agree to acquire any business or entity  (other than to foreclose on
            collateral for a defaulted loan)

          * make any material change in its accounting  methods or practices not
            required by generally accepted accounting principles ("GAAP")

          * take any  action  that  would  cause any of its  representations  or
            warranties  in the  Merger  Agreement  to be  materially  untrue  or
            incorrect at the Effective Time

            Under the Merger Agreement,  Raritan cannot, directly or indirectly,
encourage or solicit or hold  discussions or  negotiations  with, or provide any
information to, any person,  entity or group (other than United)  concerning any
merger,  sale of stock,  sale of substantial  assets or liabilities  outside the
ordinary   course  of  business  or  similar   transactions   (an   "Acquisition
Transaction").  However,  Raritan may enter into  discussions or negotiations or

                                       31

<PAGE>

provide any information in connection with an unsolicited  possible  Acquisition
Transaction if the Raritan Board,  after consulting with counsel,  determines in
the exercise of its fiduciary responsibilities that it should take such actions.
Raritan has agreed to promptly  communicate  to United the terms of any proposal
it  may  receive  with  respect  to  any  such  Acquisition  Transaction.   This
restriction,  along  with the  Option  described  on page 33,  may  deter  other
potential acquirors of control of Raritan.

Stock Option to United for Raritan Shares

            In connection with the negotiation of the Merger Agreement,  Raritan
granted  United an option (the  "Option")  to  purchase up to 470,000  shares of
Raritan Common Stock (approximately 19.9% of the outstanding Raritan shares when
the Option was  granted).  The Option  exercise  price is $26.00 per share.  The
Option is exercisable only if certain specifically  enumerated triggering events
occur and the Merger is not consummated.  United has no right to vote the shares
covered by the Option prior to its exercise.  The agreement  granting the Option
is set forth as Appendix B to this document.

            United could recognize a gain if it exercises the Option and resells
the shares it acquires for more than the exercise  price.  The  existence of the
Option may deter other potential acquirors of control of Raritan, since it would
probably  increase the cost of acquiring all the shares of Raritan Common Stock.
United's exercise of the Option could also make pooling-of-interests  accounting
treatment unavailable to a subsequent acquiror.

Representations, Warranties and Covenants

            The Merger Agreement contains customary mutual  representations  and
warranties, as well as covenants, relating to, among other things:

                     * corporate organization and similar corporate matters

                     * authorization, execution and enforceability of the Merger
                       Agreement

                     * the  accuracy of  information  contained  in each party's
                       filings with the SEC

                     * the  accuracy  of  information  supplied by each party in
                       creating this document

                     * compliance with applicable laws

                     * the absence of material litigation

                     * certain bank regulatory matters

                     * the absence of certain  material  changes or events since
                       June 30, 1998

                     * the adequacy of loan loss reserves

                     * each  party's  preparations  to have its data  processing
                       systems be Year 2000 compliant

                                       32

<PAGE>


Regulatory Approvals

            Consummation of the Merger and the Bank Merger requires the approval
of the Office of the Comptroller of the Currency (the "OCC").  OCC approval does
not constitute an endorsement of the Merger or a  determination  by the OCC that
the terms of the  Merger  are fair to the  shareholders  of  Raritan  or United.
United filed an application  for OCC approval on __________,  1998.  United also
corresponded with the Federal Reserve Board on __________,  1998 to confirm that
the Merger does not require the  approval of the Federal  Reserve  Board.  While
United and Raritan anticipate  receiving such approval and confirmation,  we can
give no assurance  that they will be granted,  or that they will be granted on a
timely basis without conditions unacceptable to United or Raritan.

Management and Operations After the Merger

            At the Effective  Time,  as a result of the Merger,  Raritan will be
merged with and into United,  with United as the surviving  entity.  Immediately
following  the Merger,  RSB will be merged with and into UNB in the Bank Merger,
with UNB as the surviving entity. UNB will continue to operate as a wholly-owned
subsidiary of United.

            At the Effective Time,  each of Arlyn D. Rus,  currently age 58, and
William T.  Kelleher,  Jr.,  currently  age 47,  will  become a director of both
United and UNB. Mr. Rus is currently  Chairman,  President  and Chief  Executive
Officer of both  Raritan and RSB. Mr. Rus also  presently  serves as a member of
the Board of Directors of the Savings and Community  Bankers of New Jersey,  and
as a Director of Somerset Health Care  Corporation.  Mr. Kelleher is currently a
director of Raritan. Mr. Kelleher has served as a Director of Raritan since 1987
and of RSB since 1983. Mr. Kelleher is a partner in the law firm of Kelleher and
Moore,  and has served as a municipal  court judge in the Borough of  Somerville
(New Jersey) since 1983 and in the Township of Branchburg since 1990.

Exchange of Certificates

            At the  Effective  Time, no one will any longer have any rights as a
Raritan  stockholder.  Certificates  which represented  shares of Raritan Common
Stock  automatically will represent the shares of United Common Stock into which
those shares of Raritan Common Stock are converted by the Merger.

            Promptly  after the  Effective  Time,  United will have its Exchange
Agent send written  instructions  and a letter of  transmittal to each holder of
Raritan Common Stock,  indicating how to exchange Raritan stock certificates for
the United stock  certificates.  Raritan  stockholders  should not send in their
stock certificates until they receive instructions from the Exchange Agent.

            Each share of United  Common  Stock  issued in exchange  for Raritan
Common  Stock will be deemed to have been issued at the  Effective  Time.  Thus,
Raritan  stockholders  who  receive  United  Common  Stock in the Merger will be
entitled to receive any dividend or other  distribution  which may be payable to
holders  of  record  of  United  Common  Stock as of any  date on or  after  the
Effective Time. However, no dividend or other distribution will actually be paid
with  respect  to any  shares  of United  Common  Stock  until the  certificates
formerly  representing shares of Raritan Common Stock have been surrendered,  at
which time any  accrued  dividends  and other  distributions  on such  shares of
United Common Stock will be paid without interest.  See "-- Consideration;  Cash
instead of Fractional Shares on page 21.

            Raritan  stockholders,  promptly after they surrender  their Raritan
stock   certificates  to  the  Exchange   Agent,   will  receive  a  certificate
representing  the full number of shares of United  Common Stock into which their
shares of Raritan  Common Stock have been  converted.  At the time the new stock
certificate is issued,  a check for the amount of the fractional share interest,
if any, will also be issued to the former Raritan stockholder.

                                       33

<PAGE>

Amendments; Termination

            The Merger Agreement may be amended, modified or supplemented by the
mutual written  consent of United and Raritan at any time prior to the Effective
Time. However,  under applicable Delaware law, certain types of amendments (such
as an  amendment  to  decrease  the  Exchange  Ratio)  cannot be made  following
adoption of the Merger  Agreement  by the  Raritan  stockholders  without  their
approval.

            The Merger  Agreement  may be  terminated  by the mutual  consent of
Raritan and United.  The Merger  Agreement  may also be terminated by Raritan or
United if, among other things:

          * the Effective  Time has not occurred on or before June 30, 1999 (the
            "Cutoff  Date") unless the failure of such  occurrence is due to the
            failure of the party  seeking to terminate to perform or observe its
            covenants in the Merger Agreement

          * the  shareholders  of either  Raritan or United  fail to approve the
            Merger Agreement at their Meetings unless such failure is due to the
            failure of the party  seeking to terminate to perform or observe its
            covenants in the Merger Agreement, or

          * any  regulatory  approvals  necessary to consummate  the Merger have
            been denied or withdrawn at the request of the regulatory  agency or
            such approval is given with conditions which  materially  impair the
            value of Raritan,  taken as a whole, to United (but then only United
            can terminate)

            United may terminate the Merger Agreement if:

          * there  has  been  a  material   adverse   change  in  the  business,
            operations,  assets or financial  condition  of Raritan,  taken as a
            whole,  from that  disclosed by Raritan to United on the date of the
            Merger Agreement

          * there  was  a  material  breach  in  any  representation,  warranty,
            covenant,  agreement  or  obligation  of  Raritan  under the  Merger
            Agreement

          * the  conditions to United's  obligations  to close are not satisfied
            and are not  capable of being  satisfied  by the  Cutoff  Date after
            giving Raritan a reasonable opportunity to cure any such condition

            Raritan may terminate the Merger Agreement if:

          * there  has  been  a  material   adverse   change  in  the  business,
            operations, assets or financial condition of United or UNB from that
            disclosed by United on the date of the Merger Agreement

          * there  was  a  material  breach  in  any  representation,  warranty,
            covenant,  agreement  or  obligation  of  United  under  the  Merger
            Agreement

          * if the conditions for Raritan to close are not satisfied and are not
            capable of being  satisfied by the Cutoff Date after giving United a
            reasonable opportunity to cure any such condition

                                       34
<PAGE>

            In addition,  Raritan may elect to terminate the Merger Agreement if
(either  before or after the  approval  of the  Merger  Agreement  by  Raritan's
stockholders)  a Termination  Event (as defined  below)  occurs.  A "Termination
Event" is when both of the following conditions are satisfied:

                 * The Average  Pre-Closing  Price of United Common Stock on the
                   Determination Date (the "Determination  Price"), is less than
                   the United Floor  Price.  (As of the date of this Joint Proxy
                   Statement-Prospectus,  the United  Floor Price is  $20.2362.)
                   The  "United  Floor  Price"  is  85% of  the  United  Average
                   Starting Date Price. The "United Average Starting Date Price"
                   is the  average  of the  high and low  sale  price of  United
                   Common  Stock  (i.e.,  $26.188)  on  September  21, 1998 (the
                   "Starting  Date"),  adjusted to reflect  any  Capital  Change
                   (i.e., $23.807, after adjusting for the 1998 Stock Dividend).

                                       and

                 * (i) The quotient obtained by dividing the Determination Price
                  by the United Average Starting Date Price (the "United Ratio")
                  is less than (ii) the quotient obtained by dividing the number
                  calculated using the index of financial institutions set forth
                  on Exhibit B to the Merger Agreement (the "Index Price") as of
                  the close of business on the  Determination  Date by the Index
                  Price as of the close of  business  on the  Starting  Date and
                  subtracting  0.10 from the  quotient in this clause (ii) (such
                  number being referred to as the "Index Ratio").

            If Raritan  elects to exercise  its  termination  right  following a
Termination  Event,  it must  notify  United  during  the  three  business  days
following the Determination Date. During the next two business days, United will
have the option to increase the  consideration  to be received by the holders of
Raritan Common Stock in the Merger by increasing the Exchange Ratio to equal the
lesser of:

            (i) a number  (rounded to four  decimals)  equal to a quotient,  the
            numerator  of which is the  United  Floor  Price  multiplied  by the
            Exchange  Ratio (as then in effect) and the  denominator of which is
            the Determination Price, and

            (ii) a number  (rounded to four decimals)  equal to a quotient,  the
            numerator  of which is the Index Ratio  multiplied  by the  Exchange
            Ratio (as then in effect) and the denominator of which is the United
            Ratio. If United so elects and timely notifies  Raritan,  the Merger
            Agreement will be reinstated, with the modified Exchange Ratio.

            The  Termination  Event  provision is intended to enable the Raritan
Board to  terminate  the Merger  Agreement  if the price of United  Common Stock
falls by more  than 15% from the  average  of its high and low  sales  prices on
September  21, 1998  ($26.188,  or $23.807  after  adjusting  for the 1998 Stock
Dividend)  and the  percentage  drop in the price of United  Common  Stock is at
least 10% more than the percentage drop in an index of 20 comparable bank stocks
(for  example,  if the bank stock index falls by 8%,  United  Common Stock would
have to fall by more than 18% for the second  test to be met).  The  Termination
Event provision is also intended to enable United to override the termination by
increasing the Exchange Ratio to a level that would provide Raritan stockholders
with  consideration  at the  minimum  value  they could  have  received  without
triggering a Termination Event.

            It is not  possible to know whether a  Termination  Event will occur
until after the Determination Date. We cannot assure you either that the Raritan
Board  would  exercise  its  right  to  terminate  the  Merger  Agreement  if  a
Termination  Event occurs,  or that United would  increase the Exchange Ratio to
override any such termination by Raritan.

                                       35

<PAGE>

            The  Raritan  Board has not made a  determination  as to  whether it
would  exercise  its  right to  terminate  the  Merger  Agreement  if there is a
Termination  Event. In considering  whether to exercise its termination right in
such situation,  the Raritan Board would,  consistent with its fiduciary duties,
take into account all relevant  facts and  circumstances  that exist at the time
and would consult with its financial advisors and legal counsel. Approval of the
Merger Agreement by the Raritan  stockholders at the Raritan Meeting will confer
on the Raritan Board the power,  consistent with its fiduciary  duties, to elect
to  consummate  the Merger in the event of  Termination  Event and  without  any
further action by, or resolicitation of, the stockholders of Raritan.

            The United Board has not made a determination as to whether it would
increase the Exchange Ratio to override any termination by Raritan if there is a
Termination Event. In considering  whether to exercise its right to increase the
Exchange Ratio in such  situation,  the United Board would,  consistent with its
fiduciary duties,  take into account all relevant facts and  circumstances  that
exist at the time and  would  consult  with its  financial  advisors  and  legal
counsel.  Approval of the Merger  Agreement  by the United  shareholders  at the
United  Meeting will confer on the United Board the power,  consistent  with its
fiduciary  duties,  to elect to increase the Exchange  Ratio and  consummate the
Merger in response to a Raritan  termination  following a Termination  Event and
without any further action by, or resolicitation of, the shareholders of United.

            In the event of a termination, each party will retain all rights and
remedies  it may  have at law or  equity  under  the  Merger  Agreement.  Upon a
termination of the Merger Agreement, the transactions  contemplated thereby will
be abandoned  without  further  action by any party and each party will bear its
own expenses.

Accounting Treatment of the Merger

            The  Merger is  expected  to be  accounted  for by United  under the
pooling of interests  method of accounting in accordance with GAAP. Each party's
obligation to consummate  the Merger is  conditioned  upon United's  receiving a
letter from its independent  public  accountants  that the Merger  qualifies for
such  accounting   treatment.   Under  GAAP  pooling  of  interests   accounting
principles, as of the Effective Time the assets and liabilities of Raritan would
be added to those of United at their recorded book values and the  stockholders'
equity accounts of United and Raritan would be combined on United's consolidated
balance  sheet.  On a pooling of interests  accounting  basis,  income and other
financial  statements  of United  issued after the Merger is completed  would be
restated  retroactively to reflect the consolidated  combined financial position
and results of operations of United and Raritan as if the Merger had taken place
prior  to the  periods  covered  by such  financial  statements.  The pro  forma
financial  information contained in this Joint Proxy Statement has been prepared
using the pooling of interests  accounting basis to account for the Merger.  See
"PRO FORMA FINANCIAL INFORMATION" beginning on page 36.

Federal Income Tax Consequences

            The  following  is  a  discussion  of  certain  federal  income  tax
consequences  of the Merger but is not intended to be a complete  description of
such consequences.  The discussion is included for general information  purposes
only and may not apply to special situations,  such as Raritan stockholders,  if
any,  who  received  United  Common  Stock upon the  exercise of employee  stock
options of otherwise as compensation,  that hold Raritan Common Stock as part of
a "straddle"  or  "conversion  transaction",  or that are  insurance  companies,
securities  dealers,  financial  institutions or foreign  persons,  and does not
discuss any aspects of state,  local or foreign  taxation.  This  discussion  is
based  upon  laws,  regulations,  rulings  and  decisions  now in effect  and on
proposed  regulations,  all of  which  are  subject  to  change  (possibly  with
retroactive effect) by legislation,  administrative action or judicial decision.
No ruling has been or will be requested from the Internal Revenue Service on any
tax matter relating to the tax consequences of the Merger.

                                       36

<PAGE>

            As an  exhibit  to the  Registration  Statement  of which this Joint
Proxy Statement is a part, Pitney, Hardin, Kipp & Szuch, counsel to United, have
advised  United and  Raritan in an  opinion  dated the date of this Joint  Proxy
Statement that:

          * the Merger  will be treated  for  federal  income tax  purposes as a
            reorganization qualifying under the provisions of Section 368 of the
            Internal Revenue Code of 1986, as amended (the "Code").

          * no gain or loss will be recognized by Raritan.

          * No gain or loss will be recognized  for federal  income tax purposes
            by Raritan stockholders upon the exchange in the Merger of shares of
            Raritan  Common  Stock solely for United  Common Stock  (except with
            respect to cash received  instead of a fractional  share interest in
            United Common Stock).

          * The basis of United  Common Stock  received in the Merger by Raritan
            stockholders  (including the basis of any fractional  share interest
            in United  Common Stock) will be the same as the basis of the shares
            of Raritan Common Stock surrendered in exchange therefore.

          * The holding  period of United  Common Stock  (including  the holding
            period of any fractional share interest in United Common Stock) will
            include the holding period during which the shares of Raritan Common
            Stock  surrendered  in  exchange  therefor  were held by the Raritan
            stockholder,  provided such shares of Raritan Common Stock were held
            as capital assets.

          * Cash  received  by a holder of  Raritan  Common  Stock  instead of a
            fractional  share interest in United Common Stock will be treated as
            received  in  exchange  for  such  fractional  share  interest  and,
            provided the fractional share would have constituted a capital asset
            in hands of such  holder,  the holder  should in  general  recognize
            capital  gain or loss in an amount equal to the  difference  between
            the amount of cash  received  and the  portion of the  adjusted  tax
            basis in Raritan  Common  Stock  allocable to the  fractional  share
            interest.

            Consummation  of the Merger is conditioned,  among other things,  on
receipt by each of United and  Raritan of an opinion of Pitney,  Hardin,  Kipp &
Szuch, dated the Closing Date, to the same effect. While United and Raritan have
the  contractual  right to waive this condition to closing,  neither will do so,
and the Merger will not take place if the opinion is not obtained.

            The opinions of Pitney, Hardin, Kipp & Szuch summarized above are or
will be based, among other things, on representations  contained in certificates
of officers of Raritan and United.

            Because  certain tax  consequences  of the Merger may vary depending
upon the particular  circumstances  of each holder of Raritan Common Stock,  and
other factors,  each Raritan  stockholder is urged to consult his or her own tax
advisor to determine the particular tax  consequences  to the stockholder of the
Merger (including the application and effect of state and local income and other
tax laws).

No Dissenters' Rights

            Under  applicable  New Jersey and Delaware law,  neither  United nor
Raritan stockholders have dissenters' rights of appraisal in connection with the
Merger.

                                       37

<PAGE>

                         PRO FORMA FINANCIAL INFORMATION

            The following  unaudited pro forma  combined  financial  information
takes into account United's recently  completed  acquisition of SBSO in addition
to the pending  acquisition  of  Raritan.  The SBSO  merger was  consummated  on
September 30, 1998 and was accounted for as a pooling of interests. Accordingly,
the following  unaudited pro forma combined financial  information  presents Pro
Forma  Combined  Condensed  Statements  of  Condition  of United and  Raritan at
September 30, 1998, giving effect to the Merger as if it had been consummated at
such date.  Also  presented are the Pro Forma Combined  Condensed  Statements of
Income for the nine months ended September 30, 1998 and the years ended December
31,  1997,  1996 and 1995 giving  effect to the SBSO merger and the Merger as if
each  were  consummated  on  January 1 of each  year.  The  unaudited  pro forma
financial information is based on the historical financial statements of United,
SBSO and Raritan after giving effect to the SBSO merger and the Merger under the
pooling-of-interests  method of accounting  and based upon the  assumptions  and
adjustments  contained in the accompanying Notes to Pro Forma Combined Condensed
Financial Statements.

            The unaudited pro forma  financial  information has been prepared by
United's management based upon the historical  financial  statements and related
notes  thereto of United and Raritan  incorporated  herein by reference  and the
historical financial statements and related notes thereto of SBSO. The unaudited
pro  forma  financial  information  should  be read  in  conjunction  with  such
historical  financial  statements and notes.  The Pro Forma  Combined  Condensed
Statements of Income are not necessarily  indicative of operating  results which
would  have  been  achieved  had  either  the SBSO  merger  or the  Merger  been
consummated as of the beginning of the periods for which such data are presented
and should not be construed as being representative of future periods.

            The  pro  forma  financial  information  does  not  give  effect  to
anticipated  cost savings of the Merger.  In addition  one-time  Merger  related
charges which either have been or will be incurred in connection with the Merger
have not been  reflected  in the Pro Forma  Statements  of Income  but have been
reflected as of September 30, 1998 in the Pro Forma Statements of Condition.

                                       38

<PAGE>

<TABLE>
<CAPTION>

              PRO FORMA COMBINED CONDENSED STATEMENTS OF CONDITION
                               September 30, 1998
                                   (Unaudited)
                                                                                                                United and Raritan
                                                                                                                Pro Forma Combined
                                                                      United (4)              Raritan               Adjustments
                                                                   -----------------       --------------      ---------------------

                                                                         (Dollar Amounts in Thousands, except per share data)
<S>                                                                 <C>              <C>            <C>                  <C>      
ASSETS
Cash and Due from Banks                                             $      44,697    $    9,454     $      --           $    54,151
Federal Funds Sold                                                         55,725        44,500            --               100,225
Securities Available for Sale, at Market Value                            591,170        33,403        (2,777)(1)           621,796
Securities Held to Maturity                                                45,348        23,645            --                68,993
Trading Account Securities, at Market Value                                 1,043            --            --                 1,043
Loans (Net of Unearned Income)                                            709,067       306,153            --             1,015,220
Less:  Allowance for Possible Loan Losses                                  (7,359)       (3,774)           --               (11,133)
Other Assets                                                               77,019        20,174           500 (3)            97,693
                                                                    =============   ===========     =========         =============
      Total Assets                                                  $   1,516,710    $  433,555     $  (2,277)          $ 1,947,988
                                                                    =============   ===========     =========         =============

LIABILITIES
Deposits                                                            $   1,124,530    $  359,491     $      --           $ 1,484,021
Other Borrowed Funds                                                      224,011        35,000            --               259,011
Other Liabilities                                                          21,771         5,481         6,166 (1)(3)         33,418
                                                                    -------------   -----------     ---------         -------------
      Total Liabilities                                                 1,370,312       399,972         6,166             1,776,450
                                                                    -------------   -----------     ---------         -------------

Company-Obligated Mandatorily Redeemable Preferred Series B
      Capital Securities of a Subsidiary Trust Holding Solely
      Junior Subordinated Debentures of the Company

                                                                           20,000            --            --                20,000

STOCKHOLDERS' EQUITY
Common Stock                                                               13,989            26         4,703 (2)            18,718
Additional Paid-In Capital                                                104,263        11,280        (8,149)(1)(2)        107,394
Retained Earnings                                                              --        23,762        (6,228)(3)(2)         17,534
Treasury Stock                                                             (1,352)       (1,748)        1,748 (2)            (1,352)
Restricted Stock                                                              (64)         (195)          195 (3)               (64)
Accumulated Other Comprehensive
      Income (Loss)                                                         9,562           458          (712)(1)             9,308
                                                                    -------------   -----------     ---------          -------------
      Total Stockholders' Equity                                          126,398        33,583        (8,443)              151,538
                                                                    -------------   -----------     ---------          -------------

Total Liabilities and Stockholders' Equity                          $   1,516,710    $  433,555     $  (2,277)          $ 1,947,988
                                                                    =============   ===========     =========          =============


</TABLE>



  (1)   Reflects the  elimination of 84,150 shares of Raritan common stock owned
        by United at September 30, 1998.

  (2)   The Pro Forma Combined Condensed Statements of Condition gives effect to
        the Merger by  combining  the  respective  balance  sheets of United and
        Raritan at  September  30, 1998 on a  pooling-of  interests  basis.  The
        capital accounts have been adjusted to reflect the issuance of 3,782,991
        shares of United in exchange for all the  outstanding  shares of Raritan
        and the retirement of Raritan treasury stock.

  (3)   Reflects charges of approximately  $8,205,000,  $6,033,000 net of taxes,
        which primarily includes  estimated  severance and outplacement costs of
        $4,905,000, investment banker and other professional fees of $2,270,000,
        expenses  related to  facilities  closures and fixed asset  disposals of
        $670,000 and consolidation costs directly  attributable to the Merger of
        $360,000.

  (4)   Includes the  Statement  of Condition of SBSO, which merger was
        consummated as of September 30, 1998.

                                       39
<PAGE>


<TABLE>>
<CAPTION>
                RO FORMA COMBINED CONDENSED STATEMENTS OF INCOME
                  For the Nine Months Ended September 30, 1998
                                   (Unaudited)
                                                                                                                 United and Raritan
                                                                                                Pro Forma             Combined
                                             United (2)                   Raritan              Adjustments
                                       -----------------------      ---------------------   -------------------  -------------------

                                                              (Dollar amounts in thousands, except per share data)
<S>                                      <C>                         <C>                  <C>                     <C>               
Total Interest Income                    $          76,856           $          22,323    $              --       $        99,179
Total Interest Expense                              33,989                      12,366                   --                46,355
                                         ------------------          ------------------   ------------------      ----------------
Net Interest Income                                 42,867                       9,957                   --                52,824
Provision for Possible Loan Losses                   2,169                         225                   --                 2,394
                                         ------------------          ------------------   ------------------      ----------------
Net Interest Income After Provision
      for Possible Loan Losses                      40,698                       9,732                   --                50,430
Total Non-Interest Income                           15,500                       1,140                   --                16,640
Total Non-Interest Expense                          41,414                       6,304                   --                47,718
                                         ------------------          ------------------   ------------------      ----------------
Income Before Income Taxes                          14,784                       4,568                   --                19,352
Provision for Income Taxes                           4,339                       1,358                   --                 5,697
                                         ==================          ==================   ==================      ================
NET INCOME                               $          10,445           $           3,210    $              --       $        13,655
                                         ==================          ==================   ==================      ================

EARNINGS PER COMMON
      SHARE:  (1)
      Basic                              $            0.94           $            1.35                            $          0.92
                                         ==================          ==================                           ================
      Diluted                            $            0.93           $            1.27                            $          0.89
                                         ==================          ==================                           ================

Weighted Average Number of
      Shares Outstanding:
      Basic                                     11,083,000                   2,369,608                                 14,862,525
                                         ==================          ==================                           ================
      Diluted                                   11,255,000                   2,537,417                                 15,302,180
                                         ==================          ==================                           ================

</TABLE>

  (1)   The  historical  earnings  per share of  United  and  Raritan  have been
        restated to give retroactive effect to stock dividends and splits.

  (2)   Includes  the  financial  results of SBSO,  which merger was
        consummated as of September 30, 1998.

                                       40
<PAGE>

<TABLE>
<CAPTION>
                                                          PRO FORMA COMBINED CONDENSED STATEMENTS OF INCOME
                                                                For the Year Ended December 31, 1997
                                                                                (Unaudited)

                                                                                   United and SBSO                     United and
                                                                       Pro Forma   Combined         Pro Forma       Raritan Combined
                                              United          SBSO    Adjustments                    Raritan            Adjustments
                                          -----------       -------- ------------  -------------   --------------    ---------------

                                                 (Dollar amounts in thousands, except per share data)
<S>                                       <C>               <C>         <C>            <C>                <C>           
Total Interest Income                     $    88,577       $  5,182    $   --    $ 93,759     $   27,647      $   --      $ 121,406
Total Interest Expense                         36,700          2,241        --      38,941         14,525          --         53,466
                                          ------------      ---------   -------  ----------    -----------     -------    ----------
Net Interest Income                            51,877          2,941        --      54,818         13,122          --         67,940
Provision for Possible Loan Losses              3,600            232        --       3,832            600                      4,432
                                          ------------      ---------   -------  ----------    -----------     -------    ----------
Net Interest Income After Provision for
      Possible Loan Losses                     48,277          2,709        --      50,986         12,522          --         63,508
Total Non-Interest Income                      19,388            589        --      19,977          1,049          --         21,026
Total Non-Interest Expense                     47,420          2,168        --      49,588          7,464          --         57,052
                                          ------------      ---------   -------  ----------    -----------     -------    ----------
Income Before Income Taxes                     20,245          1,130        --      21,375          6,107          --         27,482
Provision for Income Taxes                      6,365            471        --       6,836          2,199          --          9,035
                                                            ---------   -------  ----------
                                          ============                                         ===========     =======    ==========
NET INCOME                                $    13,880       $    659    $   --    $ 14,539     $    3,908      $   --      $  18,447
                                          ============      =========   =======  ==========    ===========     =======    ==========

EARNINGS PER COMMON SHARE: (1)
      Basic                               $      1.36       $   1.03              $   1.31     $     1.66                  $    1.25
                                          ============      =========            ==========    ===========                ==========
      Diluted                             $      1.35       $   1.03              $   1.30     $     1.54                  $    1.21
                                          ============      =========            ==========    ===========                ==========

Weighted Average Number of Shares
Outstanding:
      Basic                                10,193,075        639,575            11,068,973      2,349,191                 14,815,933
                                          ============      =========           ==========      =========                ===========
      Diluted                              10,301,158        639,575            11,177,056      2,531,981                 15,215,566
                                          ============      =========           ==========      =========                ===========

</TABLE>


  (1)   The  historical  earnings  per share of  United  and  Raritan  have been
        restated to give retroactive effect to stock dividends and splits.

                                       41

<PAGE>

<TABLE>
<CAPTION>
                PRO FORMA COMBINED CONDENSED STATEMENTS OF INCOME
                      For the Year Ended December 31, 1996
                                   (Unaudited)

                                                                                    United and SBSO                       United and
                                                                       Pro Forma     Combined                 Pro Forma      Raritan
                                          United            SBSO     Adjustments                  Raritan     Adjustments   Combined
                                        ------------   ------------ --------------  ---------    ---------  -------------  ---------

                                                                            (Dollar amounts in thousands, except per share data)
<S>                                      <C>            <C>           <C>       <C>             <C>            <C>   <C>       
Total Interest Income                    $    79,360    $    4,691    $  --     $     84,051    $    24,931    $ --  $     108,982
Total Interest Expense                        30,130         2,051       --           32,181         12,857      --         45,038
                                        -------------  ------------  ------     -------------   ------------  ------ --------------
Net Interest Income                           49,230         2,640       --           51,870         12,074      --         63,944
Provision for Possible Loan Losses             3,049           192       --            3,241            450      --          3,691
                                        -------------  ------------  ------     -------------   ------------  ------ --------------
Net Interest Income After Provision for
      Possible Loan Losses                    46,181         2,448       --           48,629         11,624      --         60,253
Total Non-Interest Income                     15,546           540       --           16,086            720      --         16,806
Total Non-Interest Expense                    43,102         1,949       --           45,051          7,423      --         52,474
                                        -------------  ------------  ------     -------------   ------------  ------ --------------
Income Before Income Taxes                    18,625         1,039       --           19,664          4,921      --         24,585
Provision for Income Taxes                     6,345           251      205(2)         6,801          1,813      --          8,614
                                        =============  ============  ======     =============   ============  ====== ==============
NET INCOME                               $    12,280    $      788    $(205)          12,863    $     3,108    $ --  $      15,971
                                        =============  ============  ======     =============   ============  ====== ==============

EARNINGS PER COMMON SHARE: (1)
      Basic                              $      1.21    $     1.23              $       1.17    $      1.39          $        1.09
                                        =============  ============             =============   ============         ==============
      Diluted                            $      1.21    $     1.23              $       1.16    $      1.27          $        1.07
                                        =============  ============             =============   ============         ==============

Weighted Average Number of Shares
Outstanding:
      Basic                               10,140,781       639,575               11,016,679      2,242,258             14,593,081
                                        =============  ============            =============   ============          =============
      Diluted                             10,190,091       639,575               11,065,989      2,437,694             14,954,111
                                        =============  ============            =============   ============          =============

</TABLE>

  (1)   The  historical  earnings  per share of  United  and  Raritan  have been
        restated to give retroactive effect to stock dividends and splits.

  (2)   The pro forma  adjustment  to the  provision for income taxes relates to
        the reversal of tax benefits  previously  recognized by SBSO in 1996 and
        1995 as a result  of  SBSO's  reversal  of its  valuation  allowance  on
        deferred  tax assets.  SBSO  established  a valuation  allowance  on its
        deferred tax assets upon  adoption of Statement of Financial  Accounting
        Standards ("SFAS") No. 109 in 1994 due to uncertainties regarding SBSO's
        ability to realize its deferred tax assets. Subsequently, as a result of
        improved  profitability  in 1995 and 1996,  the valuation  allowance was
        reversed, resulting in significant income tax benefits in both years.

        The  valuation  allowance  that  existed as of December  31, 1994 is not
        needed on a pro forma basis.  The evaluation of the need for a valuation
        allowance  is based on the combined  results of United and SBSO.  United
        files consolidated tax returns with its subsidiaries,  and therefore any
        losses  sustained  by SBSO  would be offset by profits of United and its
        other  subsidiaries.  No valuation allowance would have been required as
        of  December  31,  1994  had  the   companies   always  been   combined.
        Accordingly,  the pro  forma  financial  statements  include a pro forma
        adjustment to reflect what the changes to the valuation  allowance would
        have been had the companies always been combined.

                                       42

<PAGE>

<TABLE>
<CAPTION>

                PRO FORMA COMBINED CONDENSED STATEMENTS OF INCOME
                      For the Year Ended December 31, 1995
                                   (Unaudited)

                                                                          United and SBSO                               United and
                                                             Pro Forma     Combined                       Pro Forma       Raritan
                                 United          SBSO       Adjustments                    Raritan        Adjustments     Combined
                               ------------   ------------  -----------   ------------    -----------    ------------   -----------
<S>                             <C>               <C>              <C>                                                 
                                                                       (Dollars in thousands, except per share data)

Total Interest Income           $     77,552    $    4,427    $    --     $     81,979    $    23,456     $    --      $    105,435
Total Interest Expense                30,104         2,012         --           32,116         13,007          --            45,123
                               --------------   -----------   -------     -------------   ------------    --------     -------------
Net Interest Income                   47,448         2,415         --           49,863         10,449          --            60,312
Provision for Possible Loan
 Losses                                  871           227         --            1,098            300          --             1,398
                               --------------   -----------   -------     -------------   ------------    --------     -------------
Net Interest Income After 
  Provision for
      Possible Loan Losses            46,577         2,188         --           48,765         10,149          --            58,914
Total Non-Interest Income             14,653           505         --           15,158            658          --            15,816
Total Non-Interest Expense            47,429         1,942         --           49,371          6,593          --            55,964
                               --------------   -----------   -------     -------------   ------------    --------     -------------
Income Before Income Taxes            13,801           751         --           14,552          4,214          --            18,766
Provision for Income Taxes             4,295            --        256(2)         4,551          1,542          --             6,093
                               ==============   ===========   =======     =============   ============    ========     =============
NET INCOME                      $      9,506    $      751    $  (256)    $     10,001    $     2,672     $    --      $     12,673
                               ==============   ===========   =======     =============   ============    ========     =============

EARNINGS PER COMMON SHARE:(1)
      Basic                     $       0.94    $     1.17                $       0.91    $      1.17                  $       0.87
                               ==============   ===========               =============   ============                 =============
      Diluted                   $       0.94    $     1.17                $       0.91    $      1.09                  $       0.85
                               ==============   ===========               =============   ============                 =============

Weighted Average Number of 
  Shares
Outstanding:
      Basic                       10,085,368       639,575                  10,961,266      2,277,781                    14,594,327
                               ==============   ===========               =============   ============                 =============
      Diluted                     10,122,829       639,575                  10,998,727      2,453,221                    14,911,614
                               ==============   ===========               =============   ============                 =============

</TABLE>

  (1)   The  historical  earnings  per share of  United  and  Raritan  have been
        restated to give retroactive effect to stock dividends and splits.

  (2)   The pro forma  adjustment  to the  provision for income taxes relates to
        the reversal of tax benefits  previously  recognized by SBSO in 1996 and
        1995 as a result  of  SBSO's  reversal  of its  valuation  allowance  on
        deferred  tax assets.  SBSO  established  a valuation  allowance  on its
        deferred tax assets upon  adoption of Statement of Financial  Accounting
        Standards ("SFAS") No. 109 in 1994 due to uncertainties regarding SBSO's
        ability to realize its deferred tax assets. Subsequently, as a result of
        improved  profitability  in 1995 and 1996,  the valuation  allowance was
        reversed, resulting in significant income tax benefits in both years.

        The  valuation  allowance  that  existed as of December  31, 1994 is not
        needed on a pro forma basis.  The evaluation of the need for a valuation
        allowance  is based on the combined  results of United and SBSO.  United
        files consolidated tax returns with its subsidiaries,  and therefore any
        losses  sustained  by SBSO  would be offset by profits of United and its
        other  subsidiaries.  No valuation allowance would have been required as
        of  December  31,  1994  had  the   companies   always  been   combined.
        Accordingly,  the pro  forma  financial  statements  include a pro forma
        adjustment to reflect what the changes to the valuation  allowance would
        have been had the companies always been combined.

                                       43

<PAGE>


                       DESCRIPTION OF UNITED CAPITAL STOCK

            The authorized capital stock of United consists of 16,000,000 shares
of United  Common  Stock and  1,000,000  shares of preferred  stock  ("Preferred
Stock"). As of September 30, 1998, there were 11,087,455 shares of United Common
Stock issued and outstanding,  including 94,303 treasury shares,  and there were
no shares of Preferred Stock outstanding.

Common Stock

            United is a New Jersey general business  corporation governed by the
New Jersey Business  Corporation Act and a registered bank holding company under
the Bank Holding  Company Act. The following  description of United Common Stock
sets forth certain general terms of United Common Stock.  See "Comparison of the
Rights of  Shareholders  of  United  and  Raritan"  for  additional  information
relevant  to an  understanding  of the  capital  stock of  United,  including  a
description  of the New Jersey  Stockholders  Protection  Act,  which  restricts
certain  transactions  involving  an  "interested  shareholder"  and a "resident
domestic corporation".

            Dividend Rights

            Holders of United  Common Stock are entitled to dividends  when,  as
and if  declared  by the  Board of  Directors  of  United  out of funds  legally
available for the payment of dividends.  The only  statutory  limitation is that
such  dividends may not be paid when United is insolvent.  Because funds for the
payment of dividends by United must come primarily from the earnings of United's
bank subsidiary,  as a practical matter,  any restrictions on the ability of UNB
to pay dividends will act as  restrictions  on the amount of funds available for
payment of dividends by United.

            As a national banking association,  UNB is subject to limitations on
the amount of  dividends  it may pay to United,  UNB's only  shareholder.  Prior
approval by the OCC is required to the extent the total of all  dividends  to be
declared by UNB in any calendar year exceeds net profits,  as defined,  for that
year  combined  with UNB's  retained net profits from the preceding two calendar
years, less any transfers to capital surplus.  Under this limitation,  UNB could
declare dividends in 1998 without prior approval of the OCC of up to $15 million
plus an amount equal to UNB's net profits for 1998 to the date of such  dividend
declaration.

            United is also subject to certain  Federal  Reserve  Board  policies
which may, in certain circumstances,  limit its ability to pay dividends.  These
policies  require,  among other things,  that a bank holding company  maintain a
minimum  capital  base.  The  Federal  Reserve  Board  would most likely seek to
prohibit any dividend  payment  which would reduce a holding  company's  capital
below these minimum amounts.

            Voting Rights

            At  meetings of  shareholders,  holders of United  Common  Stock are
entitled  to one vote per share.  The quorum  for a  shareholders'  meeting is a
majority of the  outstanding  shares.  Except as  indicated  below,  actions and
authorizations  to be  taken  or given by  shareholders  generally  require  the
approval of a majority of the votes cast by holders of United  Common Stock at a
meeting at which a quorum is present.

            The Board of Directors is divided into three  classes of  directors,
each  class  being  as  nearly   equal  in  number  of  directors  as  possible.
Approximately  one-third  of the entire  Board of Directors is elected each year
and the directors serve for terms of up to three years and, in all cases,  until
their respective successors are duly elected and qualified.  The exact number of
directors and the number  constituting  each class is fixed from time to time by
resolution adopted by a majority of the entire Board of Directors.

                                       44

<PAGE>

             Minimum Price Provision

            United's  Certificate of  Incorporation  contains a "minimum  price"
provision.  No  "Transaction"  (as defined in the Certificate of  Incorporation)
between  United  and an  "Interested  Person"  (defined  in the  Certificate  of
Incorporation to include persons who, together with their affiliates,  own 3% or
more  of the  voting  power  of  United's  capital  stock)  is  valid  or can be
consummated unless:

          * the  proposed  Transaction  is  first  approved  by  a  majority  of
            "Disinterested   Directors"   (defined   in   the   Certificate   of
            Incorporation  as directors  (other than the Interested  Person) who
            became  directors prior to the time the Interested  Person became an
            Interested  Person, or who were subsequently  nominated for director
            by a majority of other Disinterested Directors), or

          * the proposed  Transaction is first approved by the affirmative  vote
            of two-thirds of the votes cast by "Disinterested  Shareholders" (as
            defined in the Certificate of Incorporation), or

          * the  Disinterested  Shareholders  are  offered  consideration  in an
            amount equal to or in excess of an amount  determined  in accordance
            with a formula contained in the Certificate of Incorporation.

            Liquidation Rights

            In the event of  liquidation,  dissolution  or winding up of United,
holders of United  Common  Stock are  entitled  to share  equally and ratably in
assets  available  for  distribution  after  payment  of debts and  liabilities.
However,  if shares of Preferred  Stock of United are outstanding at the time of
liquidation, those shares may have prior rights upon liquidation.

            Assessment and Redemption

            All  outstanding  shares of United  Common  Stock are fully paid and
nonassessable.  The United  Common Stock is not  redeemable at the option of the
issuer or the holders thereof.

Preferred Stock

            The United Board of Directors  may issue from time to time shares of
one or more classes or series of preferred stock. The preferred stock provisions
in United's Certificate of Incorporation  authorize what is commonly referred to
as "blank check" preferred stock. That is, subject to certain  provisions in the
Certificate  of  Incorporation  and certain  limitations  prescribed by law, the
United Board has full authority to adopt  resolutions  to issue the shares,  fix
the number of shares and change the number of shares  constituting any series or
class. The United Board also has authority,  without a further shareholder vote,
to provide  for or change  the  voting  powers,  designations,  preferences  and
relative, rights,  qualifications,  limitations or restrictions of the preferred
stock,  including  dividend  rights,  redemption  terms,  conversion  rights and
liquidation preferences.

            One of the effects of these  provisions  may be to enable the United
Board to deter or discourage an attempt to obtain  control of United by means of
a tender offer, proxy contest,  merger or otherwise,  and thereby to protect the
continuity of United's management. The issuance of shares of preferred stock may
adversely  affect the rights of the holders of United Common Stock. For example,
preferred  stock may rank prior to United  Common  Stock as to dividend  rights,
liquidation  preference or both,  may have full or limited voting rights and may
be convertible into shares of United Common Stock.

                                       45
<PAGE>

         COMPARISON OF THE RIGHTS OF SHAREHOLDERS OF UNITED AND RARITAN

            United is a business  corporation  incorporated  in New Jersey under
the New Jersey Business  Corporation Act (the "NJBCA") and Raritan is a business
corporation  incorporated in Delaware under the Delaware General Corporation Law
(the  "DGCL").  The rights of Raritan  stockholders  are  currently  governed by
Delaware  corporate law. At the Effective  Time, each Raritan  stockholder  will
become a  shareholder  of United  and the rights of  shareholders  of United are
governed by New Jersey  corporate  law. The following is a comparison of certain
provisions  of New  Jersey  corporate  law and  Delaware  corporate  law and the
respective  certificates  of  incorporation  and  by-laws of each of Raritan and
United.  This  summary  does not purport to be complete  and is qualified in its
entirety by reference to the DGCL and the NJBCA,  which statutes may change from
time to time, and the respective  certificates of  incorporation  and by-laws of
United and Raritan, which also may be changed.

Voting Requirements

            Under  the  NJBCA,  unless  a  greater  vote  is  specified  in  the
certificate  of  incorporation,  any  amendment  to a New  Jersey  corporation's
certificate of incorporation,  the voluntary dissolution of the corporation, the
sale or other disposition of all or substantially all of a corporation's  assets
otherwise than in the ordinary course of business or the merger or consolidation
of  the  corporation  with  another  corporation,  requires  in  each  case  the
affirmative  vote  of a  majority  of the  votes  cast  by  shareholders  of the
corporation entitled to vote thereon. United's Certificate of Incorporation does
not  presently  contain   provisions   specifying  a  greater  vote  in  certain
circumstances.

            The New Jersey  Stockholders  Protection  Act (the  "NJSPA")  limits
certain  transactions  involving  an  "interested  shareholder"  and a "resident
domestic  corporation."  An "interested  shareholder" is one that is directly or
indirectly  a  beneficial  owner  of 10% or  more  of the  voting  power  of the
outstanding voting stock of a resident domestic corporation. The NJSPA prohibits
certain business  combinations between an interested  shareholder and a resident
domestic  corporation  for a period of five years after the date the  interested
shareholder  acquired its stock, unless the business combination was approved by
the resident domestic  corporation's  board of directors prior to the interested
shareholder's  stock acquisition  date. After the five-year period expires,  the
prohibition on certain business combinations continues unless the combination is
approved  by the  affirmative  vote  of  two-thirds  of  the  voting  stock  not
beneficially owned by the interested shareholder, the combination is approved by
the  board  prior to the  interested  shareholder's  stock  acquisition  date or
certain fair price provisions are satisfied.

            Set forth below is a summary of provisions in Raritan's  Certificate
of Incorporation and the DGCL that, under certain  circumstances require greater
than a majority of the votes eligible to be cast or limit certain voting rights.

            Under Delaware Law, unless otherwise specified in the Certificate of
Incorporation  of a Delaware  corporation,  the amendment to the  certificate of
incorporation,  the sale or other disposition of all or substantially all of the
assets of a corporation,  or the merger or consolidation of a stock  corporation
with another stock  corporation  requires the affirmative  vote of a majority of
the outstanding stock entitled to vote thereon (with respect to the amendment of
the  Certificate of  Incorporation,  the  affirmative  vote of a majority of the
outstanding  shares of stock of each  class  entitled  to vote  thereon  is also
required).

            Under  Raritan's  certificate  of  incorporation,  record holders of
common stock who beneficially own in excess of 10% of the outstanding  shares of
common  stock (the  "Limit")  are not  entitled to any vote with  respect to the
shares held in excess of the Limit. The certificate of incorporation  authorizes
Raritan's  Board  of  Directors  (i) to make  all  determinations  necessary  to
implement and apply the Limit, including determining whether persons or entities
are acting in  concert,  and (ii) to demand  that any  person who is  reasonably
believed to beneficially own stock in excess of the Limit supply  information to
the Board to enable it to implement  and apply the Limit.  At the Record Date no
Raritan stockholder exceeded the Limit.

                                       46

<PAGE>

            Under Raritan's Certificate of Incorporation the affirmative vote of
the holders of at least 80% of the outstanding  voting stock entitled to vote in
the election of  directors  (after  giving  effect to the Limit) is required for
certain business combinations, certain liquidations or dissolutions, and certain
reclassifications of securities.

Cumulative Voting

            Under the NJBCA,  shareholders  of a New Jersey  corporation  do not
have  cumulative   voting  rights  in  the  election  of  directors  unless  the
certificate of incorporation so provides.  United's Certificate of Incorporation
does not presently provide for cumulative voting.

            Under the DGCL,  shareholders of a Delaware  corporation do not have
cumulative  voting rights in the election of directors unless the certificate of
incorporation  so provides.  Raritan's  Certificate  of  Incorporation  does not
presently provide for cumulative voting.

Classified Board of Directors

            The  NJBCA  permits  a  New  Jersey  corporation  to  provide  for a
classified board in its certificate of incorporation  and United currently has a
classified  Board of Directors.  The United Board is divided into three classes,
with one class of  directors  generally  elected  for  three-year  terms at each
annual meeting.  A vacancy on the United Board of Directors may be filled by the
affirmative  vote of  two-thirds  of the  directors  remaining  in  office.  All
appointees will assume the class in which the vacancy occurs.

            The DGCL permits a Delaware  corporation to provide for a classified
board in its certificate of  incorporation or bylaws.  Raritan's  Certificate of
Incorporation  provides  that the board is divided into three  classes,  each of
which  contains  approximately  one-third  of the whole number of members of the
board. Each class serves a staggered term, with  approximately  one-third of the
total number of directors being elected each year.

Rights of Dissenting Shareholders

            Shareholders of a New Jersey  corporation who dissent from a merger,
consolidation,  sale of all or substantially all of the corporation's  assets or
certain other corporate transactions are generally entitled to appraisal rights.
No statutory  right of  appraisal  exists,  however,  where the stock of the New
Jersey corporation is (i) listed on a national securities exchange, (ii) is held
of record by not less than 1,000 holders, or (iii) where the consideration to be
received  pursuant  to the  merger,  consolidation  or sale  consists of cash or
securities or other obligations which, after the transaction,  will be listed on
a national securities exchange or held of record by not less than 1,000 holders.

            Stockholders of a Delaware  corporation who dissent from a merger or
consolidation of the corporation may be entitled to appraisal rights.  There are
no statutory  rights of appraisal with respect to  stockholders of a corporation
whose  shares  are  either  (i)  listed on a  national  securities  exchange  or
designated as a national  market  system  security on an  interdealer  quotation
system by the National Association of Securities Dealers,  Inc., or (ii) held of
record by more than 2,000  stockholders,  where such  stockholders  receive only
shares of stock or depository receipts of the corporation surviving or resulting
from the merger or  consolidation  or shares of stock or depository  receipts of
any other corporation which at the effective date of the merger or consolidation
will be either  listed on a national  securities  exchange  or  designated  as a
national  market  system  security  on an  interdealer  quotation  system by the
National Association of Securities Dealers,  Inc. or held of record by more than
2,000 stockholders (or cash in lieu of fractional share interests therein).  The
exceptions  from the Delaware  statutory right of appraisal apply to the Raritan
Common Stock since the Raritan  Common  Stock is presently  listed on Nasdaq and
the United  Common  Stock to be  received  pursuant  to the Merger is  presently
listed on Nasdaq.

                                       47
<PAGE>

Shareholder Consent to Corporate Action

            Except as otherwise  provided by the  certificate  of  incorporation
(and United's  Certificate of  Incorporation  presently is silent on this issue)
the NJBCA permits any action required or permitted to be taken at any meeting of
a corporation's shareholders, other than the annual election of directors, to be
taken without a meeting upon the written consent of shareholders  who would have
been entitled to cast the minimum  number of votes  necessary to authorize  such
action at a meeting of shareholders at which all  shareholders  entitled to vote
were present and voting. The annual election of directors, if not conducted at a
shareholders'  meeting, may only be effected by unanimous written consent. Under
the  NJBCA,  a  shareholder  vote on a plan of merger or  consolidation,  if not
conducted  at a  shareholders'  meeting,  may only be  effected  by either:  (i)
unanimous written consent of all shareholders entitled to vote on the issue with
advance  notice  to  any  other   shareholders,   or  (ii)  written  consent  of
shareholders  who would have been  entitled to cast the minimum  number of votes
necessary to authorize such action at a meeting, together with advance notice to
all other shareholders.

            The   Certificate  of   Incorporation   of  Raritan   provides  that
stockholders' action cannot be effected by written consent.

Dividends

            Unless there are other restrictions  contained in its certificate of
incorporation  (and United's  Certificate  of  Incorporation  does not presently
contain any such  restriction),  the NJBCA generally  provides that a New Jersey
corporation  may declare and pay dividends on its  outstanding  stock so long as
the corporation is not insolvent and would not become insolvent as a consequence
of the dividend  payment.  Because  funds for the payment of dividends by United
must  come  primarily  from the  earnings  of  United's  bank  subsidiary,  as a
practical matter, any restrictions on the ability of UNB to pay dividends act as
restrictions  on the amount of funds  available  for the payment of dividends by
United. For a description of the regulatory restrictions on dividend payments by
UNB, see "DESCRIPTION OF UNITED CAPITAL STOCK -- Dividend Rights" page __.

            The DGCL generally limits dividends by Raritan to an amount equal to
the excess of the net assets of Raritan (the amount by which total assets exceed
total liabilities) over its statutory capital, or if there is no such excess, to
its net  profits for the  current  and/or  immediately  preceding  fiscal  year.
Because Raritan does not conduct any material  activities at the holding company
level, its ability to pay dividends  depends on capital  distributions  from its
subsidiaries.  For a  discussion  of the  regulatory  restrictions  on  dividend
payments by RSB, see _______________ on page __.

By-laws

            Under the NJBCA, the board of directors of a New Jersey  corporation
has the power to adopt, amend, or repeal the corporation's by-laws,  unless such
powers are reserved in the  certificate of  incorporation  to the  shareholders.
United's  Certificate of Incorporation does not presently reserve such powers to
shareholders.

            Under the DGCL, the stockholders of a Delaware  corporation have the
power to adopt, amend, or repeal the corporation's  by-laws,  unless such powers
also are reserved in the certificate of incorporation to the board of directors.
Raritan's Bylaws may be amended by the Board of Directors.

                                       48

<PAGE>

Limitations of Liability of Directors and Officers

            Under  the  NJBCA,  a New  Jersey  corporation  may  include  in its
certificate of incorporation a provision which would, subject to the limitations
described  below,  eliminate or limit  directors' or officers'  liability to the
corporation  or bank, as the case may be, or to its  shareholders,  for monetary
damage for  breaches  of their  fiduciary  duty of care.  A director  or officer
cannot be relieved  from  liability or otherwise  indemnified  for any breach of
duty  based  upon an act or  omission  (i) in  breach of such  person's  duty of
loyalty to the entity or its shareholders, (ii) not in good faith or involving a
knowing  violation  of law, or (iii)  resulting  in receipt by such person of an
improper  personal  benefit.  United's  Certificate  of  Incorporation  contains
provisions  which limit a director's  or officer's  liability to the full extent
permitted by New Jersey law.

            Under  the  DGCL,  a  Delaware   corporation   may  include  in  its
certificate of incorporation a provision which would, subject to the limitations
described  below,  eliminate or limit  directors' or officers'  liability to the
corporation  or its  shareholders,  for  monetary  damage for  breaches of their
fiduciary  duty of care.  A  director  cannot  be  relieved  from  liability  or
otherwise indemnified (i) for breach of the director's duty of loyalty, (ii) for
acts or  omissions  not in good faith or  involving  intentional  misconduct  or
knowing  violation  of law,  (iii) for  willful or  negligent  conduct in paying
dividends or repurchasing  stock out of other than lawfully  available funds, or
(iv) for any transaction  from which the director  derives an improper  personal
benefit.  Raritan's Certificate of Incorporation contains provisions which limit
a  director's  or officer's  liability to the full extent  permitted by Delaware
law.

Minimum Price Provision

            Raritan's certificate of incorporation  contains a provision similar
to United's  "minimum price"  provision  discussed on page 45. under the caption
"-- Minimum Price Provision," except that it applies to transactions with owners
of more than 10% of Raritan's Common Stock.

Consideration of Acquisition Proposals

            The NJBCA provides that in  determining  whether a proposal or offer
to acquire a corporation is in the best interest of the  corporation,  the board
may,  in  addition to  considering  the  effects of any action on  shareholders,
consider any of the following:

          * the effects of the proposed action on the  corporation's  employees,
            suppliers, creditors and customers;

          * the effects on the community in which the corporation operates, and

          * the long-term as well as short-term interests of the corporation and
            its shareholders, including the possibility that those interests may
            be served best by the continued independence of the corporation.

            The statute  further  provides that if, based on those factors,  the
board  determines  that  any  such  offer  is not in the  best  interest  of the
corporation,  it may  reject  the  offer.  These  provisions  may  make  it more
difficult for a shareholder  to challenge the United  Board's  rejection of, and
may facilitate the Board's rejection of, an offer to acquire United.

            There are no comparable  provision in the DGCL.  However,  Raritan's
certificate of incorporation provides that, when evaluating any offer by another
person to  acquire  Raritan,  the  board  may  consider  all  relevant  factors,
including,  without limitation,  the social and economic effect of acceptance of
such offer:

                                       49

<PAGE>

          * on the present and future  customers  and  employees  of Raritan and
            RSB;

          * on the communities in which Raritan and RSB operate or are located;

          * on the ability of Raritan to fulfill its  corporate  objective  as a
            bank holding company under applicable laws and regulations; and

          * on the  ability of RSB to  fulfill  the  objectives  of a stock form
            savings bank under applicable statutes and regulations.

Preferred Stock

            United can (except in  connection  with  certain  transactions  with
"Interested  Shareholders")  issue new shares of authorized but unissued  United
Common Stock or preferred stock without shareholder  approval.  See "Description
of United Capital Stock--Preferred Stock."

                              SHAREHOLDER PROPOSALS

United

            The NJBCA  requires  that the notice of  shareholders'  meeting (for
either a regular or special  meeting)  specifies the purpose or purposes of such
meeting.  Thus,  shareholder proposals must be referred to in United's notice of
shareholders'  meeting for such  proposal to be validly  considered at an annual
meeting of United.

            Any United  shareholder  who wishes to have a proposal  included  in
United's notice of shareholders' meeting, proxy statement and proxy card for its
1999  Annual  Meeting  must  submit  the  proposal  to United by the  applicable
deadline. The deadline is November 23, 1998 subject to change as noted below.

            If United  changes its 1999 Annual  Meeting date to a date more than
30 days from the date of its 1998 Annual Meeting,  then the deadline referred to
in the preceding  paragraph  will be changed to a reasonable  time before United
begins to print and mail its proxy materials.  If United changes the date of its
1999 Annual Meeting in a manner which alters the deadline,  United will so state
under  Item 5 of the first  quarterly  report on Form 10-Q it files with the SEC
after the date change.

Raritan

            Raritan will hold its 1999 Annual  Meeting only if the Merger is not
completed.  Any Raritan  stockholder  who wishes to have a proposal  included in
Raritan's proxy statement and proxy card for its 1999 Annual Meeting must submit
the proposal to Raritan by the applicable deadline. The deadline is November 25,
1998 subject to change as noted below.

            Any Raritan  stockholder who wishes to have a proposal considered at
Raritan's  1999 Annual Meeting (but not included in Raritan's  proxy  materials)
must submit the proposal to Raritan by the applicable deadline.  The deadline is
January 28, 1999, subject to change as noted below.

            If Raritan  changes its 1999 Annual Meeting date to a date more than
30 days from the date of its 1998  Annual  Meeting,  then each of the  deadlines
referred to in the preceding two paragraphs will be changed to a reasonable time
before Raritan begins to print and mail its proxy materials.  If Raritan changes
the date of the 1999  Annual  Meeting in a manner  which  alters the  deadlines,
Raritan will so state under Item 5 of the first quarterly report on Form 10-Q it
files with the SEC after the date change.

                                       50

<PAGE>

                      INFORMATION INCORPORATED BY REFERENCE

            The following documents filed by United (Company File No. 000-16931)
with the Securities and Exchange  Commission (the "SEC") are hereby incorporated
in this Joint Proxy Statement-Prospectus:

          * Annual Report on Form 10-K for the year ended December 31, 1997

          * Quarterly Reports on Form 10-Q for the quarters ended March 31, June
            30, 1998, and September 30, 1998

          * Current Reports on Form 8-K filed with the SEC on July 1, August 28,
            September  22,  September  23,  September  28,  October  1, 1998 and
            November 18, 1998

          * The  description  of  United  Common  Stock  set  forth in  United's
            Registration  Statement  on Form 8-A  filed by  United  pursuant  to
            Section 12 of the Exchange  Act,  and any  amendment or report filed
            for the purpose of updating such description

            The following  documents filed by Raritan (Company File No. 0-15830)
with the SEC are hereby incorporated in this Joint Proxy Statement-Prospectus:

          * Annual Report on Form 10-K for the year ended December 31, 1997

          * Quarterly Reports on Form 10-Q for the quarters ended March 31, June
            30, 1998 and September 30, 1998

          * Current Reports on Form 8-K filed with the SEC on October 6, 1998

          * The  description  of  Raritan  Common  Stock set forth in  Raritan's
            Registration  Statement  on Form 8-A filed by  Raritan  pursuant  to
            Section 12 of the Exchange  Act,  and any  amendment or report filed
            for the purpose of updating such description

            Accompanying  this Joint Proxy  Statement are Raritan's  1997 Annual
Report to  Stockholders  and its  Quarterly  Report on Form 10-Q for the quarter
ended September 30, 1998.

            All documents filed by United or Raritan pursuant to Sections 13(a),
13(c),  14, or 15(d) of the Exchange Act subsequent to the date hereof and prior
to the  earlier  of (i) the date of the  Raritan  Meeting,  (ii) the date of the
United  Meeting,  or (iii) the termination of the Merger  Agreement,  are hereby
incorporated  by reference into this Joint Proxy Statement and shall be deemed a
part hereof from the date of filing of such documents.

            Any  statement  contained  in a document  incorporated  by reference
herein shall be deemed to be modified or  superseded  for purposes of this Joint
Proxy Statement-Prospectus to the extent that a statement contained herein or in
any subsequently  filed document which is deemed to be incorporated by reference
herein modifies or supersedes such statement.  Any such statement so modified or
superseded  shall  not be  deemed,  except  as so  modified  or  superseded,  to
constitute a part of this Joint Proxy Statement-Prospectus.

                                  OTHER MATTERS

            As of the date of this Joint Proxy  Statement,  the Raritan Board of
Directors  knows  of no  other  matters  to  be  presented  for  action  by  the
stockholders  at  the  Raritan  Meeting.  If  any  other  matters  are  properly
presented,  however,  it is the  intention of the persons  named in the enclosed
proxy to vote in accordance with their best judgment on such matters.

                                       51

<PAGE>

            As of the date of this Joint Proxy  Statement,  the United  Board of
Directors  knows  of no  other  matters  to  be  presented  for  action  by  the
stockholders at the United Meeting. If any other matters are properly presented,
however,  it is the intention of the persons named in the enclosed proxy to vote
in accordance with their best judgment on such matters.

                                  LEGAL OPINION

            Certain  legal  matters  relating  to the  issuance of the shares of
United Common Stock offered  hereby and certain tax  consequences  of the Merger
will be passed upon by Pitney, Hardin, Kipp & Szuch, counsel to United.

                                     EXPERTS

            The consolidated  financial statements of Raritan as of December 31,
1997 and 1996 and for each of the years in the three-year  period ended December
31, 1997 have been  incorporated  by  reference  herein and in the  Registration
Statement  in reliance  upon the report of KPMG Peat  Marwick  LLP,  independent
certified public  accountants,  incorporated by reference  herein,  and upon the
authority of said firm as experts in accounting and auditing.

            The consolidated  financial  statements of United as of December 31,
1997 and 1996 and for the years then ended have been  incorporated  by reference
herein and in the  Registration  Statement  in reliance  upon the report of KPMG
Peat Marwick LLP,  independent  certified  public  accountants,  incorporated by
reference  herein,  and upon the authority of said firm as experts in accounting
and auditing.

            The consolidated  financial  statements of United for the year ended
December 31, 1995, incorporated by reference herein, have been audited by Arthur
Andersen LLP, independent public accountants, as indicated in their reports with
respect thereto,  and are incorporated by reference herein, in reliance upon the
authority of said firm as experts in giving said reports.

            Representatives  of KPMG Peat  Marwick  LLP will be  present  at the
Meetings.  They will be given an  opportunity to make a statement if they desire
to do so and  will  be  available  to  respond  to  appropriate  questions  from
shareholders present at the Meetings.

                                       52

<PAGE>

                                                                       EXHIBIT A
                AMENDED AND RESTATED AGREEMENT AND PLAN OF MERGER

                  THIS AMENDED AND RESTATED AGREEMENT AND PLAN OF MERGER,  dated
as of September 22, 1998 ("Agreement"),  is among United National Bancorp, a New
Jersey  corporation  and  registered  bank holding  company  ("United"),  United
National Bank, a national banking association  ("UNB"),  Raritan Bancorp Inc., a
Delaware  corporation and registered  bank holding  company  ("Raritan") and The
Raritan Savings Bank, a New Jersey-chartered stock savings bank (the "Bank").

                                    RECITALS

                  United  desires  to acquire  Raritan  and  Raritan's  Board of
Directors has  determined,  based upon the terms and conditions  hereinafter set
forth,  that  the  acquisition  is in the  best  interests  of  Raritan  and its
stockholders.  The  acquisition  will be  accomplished  by merging  Raritan into
United with United as the surviving  corporation and, at the same time,  merging
the Bank  into UNB with UNB as the  surviving  bank,  and  Raritan  stockholders
receiving the  consideration  hereinafter set forth.  The Boards of Directors of
Raritan,  United, the Bank and UNB have duly adopted and approved this Agreement
and the Board of Directors  of Raritan has directed  that it be submitted to its
stockholders for approval.

                  As a  condition  precedent  to entering  into this  Agreement,
United has required that Raritan grant it an option to purchase  authorized  but
unissued  shares of Raritan  common  stock  and,  as a  consequence,  United and
Raritan have entered into a Stock Option  Agreement,  dated the date hereof (the
"United Stock Option").

                  NOW,  THEREFORE,  intending to be legally  bound,  the parties
hereto agree as follows:

                                    ARTICLE I

                                   THE MERGER

                  1.1. The Merger.  Subject to the terms and  conditions of this
Agreement, at the Effective Time (as hereafter defined), Raritan shall be merged
with and into United (the "Merger") in accordance  with the New Jersey  Business
Corporation Act ("NJBCA") and the Delaware General  Corporation Law ("DGCL") and
United  shall  be  the  surviving  corporation  (the  "Surviving  Corporation").
Immediately following the Effective Time, the Bank shall be merged with and into
UNB as provided in Section 1.7 hereof.

                  1.2. Effect of the Merger. At the Effective Time (as hereafter
defined),  the Surviving  Corporation  shall be considered the same business and
corporate  entity as each of Raritan and United and thereafter all the property,
rights,  powers and  franchises  of each of Raritan and United shall vest in the
Surviving  Corporation and the Surviving  Corporation shall be subject to and be
deemed to have assumed all of the debts, liabilities,  obligations and duties of
each of Raritan  and United  and shall  have  succeeded  to all of each of their
relationships,  fiduciary  or  otherwise,  as fully and to the same extent as if
such property,  rights,  privileges,  powers,  franchises,  debts,  obligations,
duties and relationships had been originally acquired,  incurred or entered into
by the Surviving Corporation.

                  1.3.   Certificate  of   Incorporation.   The  certificate  of
incorporation  of United as it exists  immediately  prior to the Effective  Time
shall not be amended by the Merger,  but shall  continue as the  certificate  of
incorporation of the Surviving  Corporation  until otherwise amended as provided
by law.

                  1.4.  Bylaws.  The bylaws of United as they exist  immediately
prior to the  Effective  Date shall  continue  as the  by-laws of the  Surviving
Corporation until otherwise amended as provided by law. 

                  1.5.  Directors  and  Officers.  The directors and officers of
United as of the Effective  Time shall continue as the directors and officers of
the  Surviving  Corporation,  with the  additions  provided  for in Section 5.15
hereof.

                  1.6 Closing Date,  Closing and Effective  Time;  Determination
Date.  Unless a different  date,  time and/or place are agreed to by the parties
hereto,  the  closing of the Merger  (the  "Closing")  shall take place at 10:00
a.m., at the office of Pitney,  Hardin, Kipp & Szuch,  Florham Park, New Jersey,
on a date (the "Closing  Date") which shall be the fifth  business day following
the first date (the "Determination  Date") on which all necessary regulatory and
governmental  approvals and consents have been received,  all statutory  waiting
periods  in  respect  thereof  have  expired,  and all other  conditions  to the
consummation  of the  Merger  specified  in Article  VI hereof  (other  than the
delivery of  certificates,  opinions and other  instruments  and documents to be
delivered at the Closing) have been satisfied or waived, or at such other place,
time or date as United and Raritan may  mutually  agree upon.  The Merger  shall
become  effective (and be  consummated)  upon the effective time (the "Effective
Time")  specified  by United and  Raritan  in the  certificates  of merger  (the
"Certificates of Merger"),  which shall be prepared by United,  shall be in form
and substance  satisfactory  to United and Raritan,  and shall be filed with the
Secretary of State of the State of New Jersey and with the Secretary of State of
the State of Delaware. The parties currently anticipate that the Certificates of
Merger shall specify as the effective  time the close of business on the Closing
Date.  If no  effective  time is specified in the  Certificates  of Merger,  the
Merger shall become effective (and be consummated) upon the later to be filed of
the two Certificates of Merger.


                  1.7.  The Bank Merger.  Immediately  following  the  Effective
Time,  the Bank  shall be  merged  with and  into  UNB (the  "Bank  Merger")  in
accordance  with the  provisions  of the  National  Bank Act and the New  Jersey
Banking  Act of 1948,  as  amended,  and UNB  shall be the  surviving  bank (the
"Surviving  Bank").  Upon the  consummation  of the Bank  Merger,  the  separate
existence of the Bank shall cease and the Surviving Bank shall be considered the
same  business and  corporate  entity as each of the Bank and UNB and all of the
property,  rights,  powers and franchises of each of the Bank and UNB shall vest
in the Surviving Bank and the Surviving Bank shall be deemed to have assumed all
of the debts,  liabilities,  obligations  and duties of each of the Bank and UNB
and shall have  succeeded  to all of each of their  relationships,  fiduciary or
otherwise,  as  fully  and to the  same  extent  as if  such  property,  rights,
privileges, powers, franchises, debts, obligations, duties and relationships had
been originally  acquired,  incurred or entered into by the Surviving Bank. Upon
the  consummation of the Bank Merger,  the articles of association and bylaws of
UNB shall become the articles of association  and bylaws of the Surviving  Bank,
the  officers and  employees  of UNB and the officers and  employees of the Bank
shall be the officers and employees of the Surviving Bank with such additions as
the Board of Directors of UNB shall determine, and the directors of UNB shall be
the  directors of the Surviving  Bank with the  additions  from the directors of
Raritan as specified herein. In connection with the execution of this Agreement,
the Bank and UNB shall  execute and  deliver a separate  merger  agreement  (the
"Bank Merger Agreement") in substantially the form of Exhibit A, annexed hereto,
for delivery to the appropriate  regulatory authorities for approval of the Bank
Merger.

                                   ARTICLE II
                 CONVERSION OF RARITAN COMMON STOCK AND OPTIONS

                  Each  share of  common  stock,  $.01  par  value,  of  Raritan
("Raritan  Common  Stock"),  issued  and  outstanding  immediately  prior to the
Effective  Time,  and each option to  purchase  shares of Raritan  Common  Stock
validly issued pursuant to the 1993 Stock Option Plan for Outside Directors, the
1993 Incentive  Stock Option Plan or the 1997 Long-Term  Incentive Stock Benefit
Plan (together, the "Raritan Option Plans") and outstanding immediately prior to
the Effective Time and listed on Section 3.2 of the Raritan Disclosure  Schedule
(each a "Raritan  Option") shall, by virtue of the Merger and without any action
on the part of the holder  thereof,  be converted  or canceled at the  Effective
Time in accordance with this Article II.

                  2.1 Conversion of Raritan Common Stock;  Exchange Ratio;  Cash
in Lieu of  Fractional  Shares.  Each share of Raritan  Common  Stock issued and
outstanding  immediately  prior to the Effective  Time,  other than shares to be
canceled  pursuant to Section 2.4 hereof,  shall be converted  into the right to
receive 1.45 (the "Exchange Ratio") shares of Common Stock,  $1.25 par value, of
United ("United  Common  Stock"),  subject to adjustment as set forth in Section
2.6 below. No fractional  shares of United Common Stock shall be issued pursuant
to the Merger,  and, in lieu  thereof,  each holder of Raritan  Common Stock who
would  otherwise be entitled to a fractional  interest will receive an amount in
cash  determined  by  multiplying  such  fractional   interest  by  the  Average
Pre-Closing  Price of United Common  Stock.  The "Average  Pre-Closing  Price of
United Common Stock" means the average of the "Closing  Prices" (as  hereinafter
defined) of United Common Stock for the ten consecutive full trading days ending
on (and including) the  Determination  Date.  "Closing Price" on any trading day
shall mean the closing  price of United  Common Stock on such day as supplied by
the Nasdaq Stock Market,  National Market System ("NASDAQ/NMS") (and reported in
The Wall  Street  Journal or, if not  reported  thereby,  another  authoritative
source as chosen by  United).  A "trading  day" shall mean any  business  day on
which United Common Stock is actually traded on NASDAQ/NMS.

                  2.2.     Exchange of Shares.

                  (a) Raritan and United hereby appoint The Bank of New York, or
such other bank as United (with the consent of Raritan,  which consent shall not
be unreasonably withheld) shall designate,  as the exchange agent (the "Exchange
Agent") for purposes of effecting  the  conversion  of Raritan  Common Stock and
Raritan Options.  As soon as practicable  after the Effective Time, but no later
than five business days after the Effective  Time, the Exchange Agent shall mail
to each holder of record (a "Record  Holder") of a Certificates  or Certificates
which, immediately prior to the Effective Time represented outstanding shares of
Raritan  Common  Stock (the  "Certificates"),  a mutually  agreed upon letter of
transmittal  (which shall specify that delivery  shall be effected,  and risk of
loss and  title to the  Certificates  shall  pass,  only  upon  delivery  of the
Certificates to the Exchange  Agent),  and instructions for use in effecting the
surrender of the  Certificates  in exchange for United Common Stock (and cash in
lieu of fractional shares) as provided in Section 2.1 hereof.

                  (b)  Upon   surrender   of   Certificates   for  exchange  and
cancellation  to the Exchange  Agent,  together with such letter of transmittal,
duly  executed,  the Record  Holder  shall be entitled  to  promptly  receive in
exchange  for such  Certificates  the  consideration  as provided in Section 2.1
hereof and the Certificates so surrendered shall be canceled. The Exchange Agent
shall not be obligated to deliver or cause to be delivered to any Record  Holder
the  consideration to which such Record Holder would otherwise be entitled until
such Record  Holder  surrenders  the  Certificates  for  exchange or, in default
thereof, an appropriate  Affidavit of Loss and Indemnity Agreement and/or a bond
as may be reasonably  required in each case by United.  Notwithstanding the time
of surrender of the Certificates, Record Holders shall be deemed stockholders of
United for all  purposes  from the  Effective  Time,  except that  United  shall
withhold  the  payment of  dividends  from any Record  Holder  until such Record
Holder  effects the exchange of  Certificates  for United  Common  Stock.  (Such
Record Holder shall  receive such withheld  dividends,  without  interest,  upon
effecting the share exchange.)

                  (c) After the Effective  Time,  there shall be no transfers on
the stock  transfer books of Raritan of the shares of Raritan Common Stock which
were  outstanding   immediately   prior  to  the  Effective  Time  and,  if  any
Certificates  representing such shares are presented for transfer, they shall be
canceled and exchanged for the consideration as provided in Section 2.1 hereof.

                  (d) If payment of the  consideration  pursuant  to Section 2.1
hereof  is to be made  in a name  other  than  that in  which  the  Certificates
surrendered in exchange therefor is registered,  it shall be a condition of such
payment that the  Certificates  so  surrendered  shall be properly  endorsed (or
accompanied  by an  appropriate  instrument of transfer) and otherwise in proper
form for transfer,  and that the person requesting such payment shall pay to the
Exchange  Agent in advance any transfer or other taxes required by reason of the
payment to a person other than that of the registered holder of the Certificates
surrendered,  or  required  for any  other  reason,  or shall  establish  to the
satisfaction  of the  Exchange  Agent  that  such  tax has  been  paid or is not
payable.

                  (e)  With  respect  to each  outstanding  Raritan  Option  the
Exchange Agent shall,  after the Effective  Time,  distribute to the Optionee an
amendment  to the option  grant  evidencing  the  conversion  of the grant to an
option to purchase United Common Stock in accordance with Section 2.7 hereof.

                  2.3. No Dissenters' Rights.  Consistent with the provisions of
the DGCL, no stockholder of Raritan shall have appraisal  rights with respect to
the Merger.

                  2.4.  Canceled Shares.  Each share of Raritan Common Stock (i)
which is held by Raritan as treasury  stock or (ii) which is held by Bank or any
other direct or indirect subsidiary of Bank (except as trustee or in a fiduciary
capacity) or (iii) which is held by United, shall be canceled and retired at the
Effective Time.

                  2.5.  United  Shares.   The  shares  of  United  Common  Stock
outstanding at the Effective Time shall not be affected by the Merger, but along
with the  additional  shares of United  Common Stock to be issued as provided in
Section 2.1 hereof,  shall become the outstanding  common stock of the Surviving
Corporation.

                  2.6  Anti-Dilution  Adjustments.  The  Exchange  Ratio and the
Average Pre-Closing Price of United Common Stock shall be appropriately adjusted
for any stock split,  stock dividend,  stock  combination,  reclassification  or
similar transaction ("Capital Change") effected by United with respect to United
Common  Stock  between  the  date  hereof  and  the  Effective  Time.  By way of
illustration, the Exchange Ratio determined pursuant to Section 2.1 hereof shall
be adjusted  upward by 10% (to 1.595) upon the payment of the 10% stock dividend
which United  declared on September 15, 1998 and which is payable on November 2,
1998 to United  shareholders  of record as of October 15, 1998. In addition,  if
United enters into an agreement  pursuant to which shares of United Common Stock
would be converted, prior to the Effective Time, into shares or other securities
or obligations of another  corporation,  proper  provision shall be made in such
agreement so that each Raritan  stockholder  shall be entitled to receive at the
Effective  Time  such  number  of  shares  or  other  securities  or  amount  of
obligations of such other  corporation as such stockholder  would be entitled to
receive if the Effective Time had occurred immediately prior to the consummation
of such conversion.

                  2.7.  Raritan  Stock  Options.  At the  Effective  Time,  each
outstanding  Raritan Option held by any person (an "Optionee") under the Raritan
Option Plans shall be converted into a option to purchase United Common Stock (a
"Stock  Option"),  wherein  (x) the right to purchase  shares of Raritan  Common
Stock  pursuant  to the  Raritan  Option  shall be  converted  into the right to
purchase  that same number of shares of United  Common Stock  multiplied  by the
Exchange  Ratio,  (y) the option exercise price per share of United Common Stock
shall be the previous  option  exercise  price per share of Raritan Common Stock
divided by the Exchange Ratio and (z) in all other material  respects the option
shall be subject to the same terms and conditions as governed the Raritan Option
on which it was based,  including the length of time within which the option may
be exercised and for any options which are "incentive stock options" (as defined
in Section 422 of the Internal  Revenue Code of 1986, as amended (the  "Code")),
the  adjustments  shall be and are  intended to be effected in a manner which is
consistent  with  Section  424(a) of the Code.  Shares  of United  Common  Stock
issuable  upon  exercise  of Stock  Options  shall be  covered  by an  effective
registration  statement  on Form  S-8,  and  United  shall  file a  registration
statement  on Form S-8  covering  such shares as soon as  practicable  after the
Effective Time, but in no event later than 45 days after the Effective Time.

                                   ARTICLE III
                    REPRESENTATIONS AND WARRANTIES OF RARITAN

                  References herein to "Raritan Disclosure  Schedule" shall mean
all of the  disclosure  schedules  required by this Article III, dated as of the
date hereof and referenced to the specific  sections and  subsections of Article
III of this  Agreement,  which have been delivered on the date hereof by Raritan
to United. Raritan hereby represents and warrants to United as follows:

                  3.1.     Corporate Organization.

                  (a) Raritan is a corporation duly organized,  validly existing
and in good  standing  under the laws of the State of Delaware.  Raritan has the
corporate  power and authority to own or lease all of its  properties and assets
and to carry on its business as it is now being  conducted  and is duly licensed
or  qualified  to do  business in each  jurisdiction  in which the nature of the
business  conducted  by it or the  character or location of the  properties  and
assets owned or leased by it makes such  licensing or  qualification  necessary,
except  where  the  failure  to be so  licensed  or  qualified  would not have a
material  adverse  effect  on the  business,  operations,  assets  or  financial
condition of Raritan on a  consolidated  basis.  Raritan is registered as a bank
holding company under the Bank Holding Company Act of 1956, as amended ("BHCA").

                  (b) Each of the  Subsidiaries  of  Raritan  are  listed in the
Raritan Disclosure Schedule. The term "Subsidiary",  when used in this Agreement
with respect to Raritan,  means any  corporation,  joint  venture,  association,
partnership,  trust or other entity in which Raritan has, directly or indirectly
at least a 50% interest or acts as a general partner. Each Subsidiary of Raritan
is duly organized,  validly  existing and in good standing under the laws of its
state of incorporation.  The Bank is a New  Jersey-chartered  stock savings bank
whose deposits are insured to the fullest extent permitted by law by the Savings
Association Insurance Fund of the Federal Deposit Insurance Corporation ("SAIF")
for certain deposits, and by the Bank Insurance Fund of the FDIC (the "BIF") for
the remaining  deposits,  in each case to the fullest  extent  permitted by law.
Each Subsidiary of Raritan has the corporate power and authority to own or lease
all of its properties and assets and to carry on its business as it is now being
conducted and is duly licensed or qualified to do business in each  jurisdiction
in which the nature of the business conducted by it or the character or location
of the  properties  and  assets  owned or leased by it makes such  licensing  or
qualification necessary, except where the failure to be so licensed or qualified
would not have a material adverse effect on the business,  operations, assets or
financial condition of Raritan and its Subsidiaries on a consolidated basis. The
Raritan  Disclosure  Schedule  sets  forth  true  and  complete  copies  of  the
Certificates  of  Incorporation  or  Charter,  as the case may be, and Bylaws of
Raritan and each Raritan  Subsidiary as in effect on the date hereof.  Except as
set forth in the Raritan Disclosure  Schedule,  Raritan does not own or control,
directly  or  indirectly,  any  equity  interest  in any  corporation,  company,
association, partnership, joint venture or other entity and owns no real estate,
except (i) residential real estate acquired through  foreclosure or deed in lieu
of  foreclosure in each  individual  instance with a fair market value less than
$500,000 and (ii) real estate used for its banking premises.

                  3.2.     Capitalization.

                  The authorized  capital stock of Raritan consists of 3,500,000
shares of Raritan Common Stock and 2,00,000 shares of preferred stock,  $.01 par
value per share ("Raritan Preferred Stock").  As of the date hereof,  there were
2,373,569  shares of Raritan  Common Stock issued and  outstanding,  and 214,405
shares issued and held in the treasury, and no shares of Raritan Preferred Stock
outstanding.  As of the date hereof, there were 264,812 shares of Raritan Common
Stock  issuable  upon  exercise of  outstanding  Raritan  Options  (the  "Option
Shares")  granted to,  directors and officers of Raritan or the Bank pursuant to
the Raritan  Option Plans.  The Raritan  Disclosure  Schedule sets forth (i) all
options  which may be  exercised  for  issuance of Raritan  Common Stock and the
terms upon which the options may be exercised, and (ii) true and complete copies
of each of the Raritan  Option  Plans and a specimen  of each form of  agreement
pursuant to which any outstanding stock option was granted,  including a list of
each  outstanding  stock  option  issued  pursuant   thereto.   All  issued  and
outstanding  shares of Raritan  Common  Stock,  and all  issued and  outstanding
shares of capital stock of each Raritan  Subsidiary,  have been duly  authorized
and validly issued,  are fully paid, and  nonassessable.  The authorized capital
stock of the Bank consists of 10,000,000 shares of common stock, $2.00 par value
and no shares of preferred stock. All of the outstanding shares of capital stock
of each  Raritan  Subsidiary  are owned by Raritan and are free and clear of any
liens,  encumbrances,  charges,  restrictions or rights of third parties. Except
for the Raritan  Options and the United Stock  Option,  neither  Raritan nor any
Raritan  Subsidiary has or is bound by any outstanding  subscriptions,  options,
warrants,  calls,  commitments  or agreements  of any character  calling for the
transfer,  purchase or issuance of any shares of capital stock of Raritan or any
Raritan  Subsidiary  or any  securities  representing  the right to  purchase or
otherwise receive any shares of such capital stock or any securities convertible
into or representing the right to purchase or subscribe for any such shares, and
there are no  agreements  or  understandings  with respect to voting of any such
shares.

                  3.3.     Authority; No Violation.

                  (a)  Subject  to  the  approval  of  this  Agreement  and  the
transactions  contemplated hereby by the stockholders of Raritan, and subject to
the parties obtaining all necessary regulatory  approvals,  Raritan and the Bank
have full  corporate  power and authority to execute and deliver this  Agreement
and to consummate the  transactions  contemplated  hereby in accordance with the
terms hereof.  The execution and delivery of this Agreement and the consummation
of the transactions  contemplated  hereby have been duly and validly approved by
the Board of  Directors  of each of  Raritan  and the Bank.  The  execution  and
delivery of the Bank Merger  Agreement has been duly and validly approved by the
Board of Directors of the Bank. Except for the approvals  described in paragraph
(b) below, no other corporate proceedings on the part of Raritan or the Bank are
necessary to consummate the transactions contemplated hereby. This Agreement has
been duly and  validly  executed  and  delivered  by Raritan  and the Bank,  and
constitutes valid and binding  obligations of Raritan and the Bank,  enforceable
against Raritan and the Bank in accordance with its terms,  except to the extent
that enforcement may be limited by (i) bankruptcy,  insolvency,  reorganization,
moratorium, conservatorship, receivership or other similar laws now or hereafter
in  effect  relating  to or  affecting  the  enforcement  of  creditors'  rights
generally or the rights of creditors of New Jersey-chartered savings banks, (ii)
general  equitable  principles,  and  (iii)  laws  relating  to the  safety  and
soundness of insured  depository  institutions and except that no representation
is made as to the effect or  availability  of equitable  remedies or  injunctive
relief.

                  (b) Neither the  execution  and delivery of this  Agreement by
Raritan  and the  Bank,  nor the  consummation  by  Raritan  and the Bank of the
transactions  contemplated  hereby  in  accordance  with the  terms  hereof,  or
compliance by Raritan and the Bank with any of the terms or  provisions  hereof,
will (i)  violate any  provision  of  Raritan's  or the Bank's  Certificates  of
Incorporation or Charter,  as the case may be, or Bylaws, (ii) assuming that the
consents and approvals set forth below are duly  obtained,  violate any statute,
code, ordinance,  rule, regulation,  judgment, order, writ, decree or injunction
applicable  to  Raritan  or the Bank or any of their  respective  properties  or
assets,  or (iii)  except  as set  forth  in the  Raritan  Disclosure  Schedule,
violate,  conflict with,  result in a breach of any provisions of,  constitute a
default  (or an event  which,  with  notice  or lapse  of time,  or both,  would
constitute  a default)  under,  result in the  termination  of,  accelerate  the
performance  required  by,  or  result in the  creation  of any  lien,  security
interest,  charge or other encumbrance upon any of the respective  properties or
assets of Raritan or the Bank under, any of the terms,  conditions or provisions
of any note, bond, mortgage, indenture, deed of trust, license, lease, agreement
or other instrument or obligation to which Raritan or the Bank is a party, or by
which either or both of them or any of their respective properties or assets may
be bound or  affected  except,  with  respect to (ii) and (iii)  above,  such as
individually and in the aggregate will not have a material adverse effect on the
business,   operations,  assets  or  financial  condition  of  Raritan  and  its
Subsidiaries  on a consolidated  basis,  and which will not prevent or delay the
consummation of the transactions  contemplated  hereby.  Except for consents and
approvals  of or  filings  or  registrations  with or  notices  to the OCC,  the
Commissioner of Banking and Insurance of the State of New Jersey  (together with
the  Department  of Banking and  Insurance,  the  "Commissioner"),  the Board of
Governors of the Federal  Reserve  System  ("FRB"),  the Securities and Exchange
Commission ("SEC"), applicable state securities bureaus or commissions,  the New
Jersey Secretary of State, the Delaware Secretary of State, and the stockholders
of Raritan,  no consents or  approvals  of or filings or  registrations  with or
notices to any third  party or any public body or  authority  are  necessary  on
behalf of Raritan or the Bank in connection  with (x) the execution and delivery
by Raritan and the Bank of this  Agreement and (y) the  consummation  by Raritan
and the Bank of the transactions  contemplated  hereby and (z) the execution and
delivery by the Bank of the Bank Merger  Agreement and the  consummation  by the
Bank of the transactions contemplated thereby.

                  3.4.     Financial Statements.

                  (a) The Raritan  Disclosure  Schedule sets forth copies of the
consolidated  statements  of condition of Raritan as of December 31, 1995,  1996
and 1997,  and the  related  consolidated  statements  of income,  stockholders'
equity and cash flows for the  periods  ended  December  31 in each of the three
years 1995 through  1997, in each case  accompanied  by the audit report of KPMG
Peat Marwick LLP,  independent public  accountants with respect to Raritan,  and
the  unaudited  consolidated  statements  of condition of Raritan as of June 30,
1998 and  related  unaudited  consolidated  statements  of  income,  changes  in
stockholders' equity and cash flows for the six months then ended as reported in
Raritan's Quarterly Report on Form 10-Q, filed with the SEC under the Securities
and  Exchange  Act of 1934,  as amended  (the  "1934  Act")  (collectively,  the
"Raritan Financial Statements"). The Raritan Financial Statements (including the
related  notes)  have  been  prepared  in  accordance  with  generally  accepted
accounting principles ("GAAP") consistently applied during the periods involved,
and fairly  present the  consolidated  financial  condition of Raritan as of the
respective dates set forth therein, and the related  consolidated  statements of
income,  stockholders'  equity and cash flows fairly  present the results of the
consolidated operations,  stockholders' equity and cash flows of Raritan for the
respective periods set forth therein.

                  (b) The books and records of Raritan and its Subsidiaries have
been and are being  maintained in material  compliance with applicable legal and
accounting requirements, and reflect only actual transactions.

                  (c)  Except  as and  to the  extent  reflected,  disclosed  or
reserved  against  in the  Raritan  Financial  Statements  (including  the notes
thereto),  as of June 30, 1998 neither Raritan nor any of its  Subsidiaries  had
any material  liabilities,  whether absolute,  accrued,  contingent or otherwise
material to the business,  operations,  assets or financial condition of Raritan
or any of its Subsidiaries.  Since June 30, 1998 and to the date hereof, neither
Raritan nor any of its  Subsidiaries  have  incurred  any  material  liabilities
except in the ordinary  course of business and consistent  with prudent  banking
practice, except as specifically contemplated by this Agreement.

                  3.5.  Brokerage  Fees;  Financial  Advisor.   Other  than  The
Endicott Financial Advisors, L.L.C. ("Endicott"), neither Raritan nor any of its
Subsidiaries nor any of their respective  directors or officers has employed any
broker or finder or incurred any  liability for any broker's or finder's fees or
commissions  in connection  with any of the  transactions  contemplated  by this
Agreement.  Copies of Raritan's  agreements  with  Endicott are set forth in the
Raritan  Disclosure  Schedule.  Endicott  has  delivered  to Raritan its written
opinion with respect to the  fairness,  from a financial  point of view,  of the
Exchange Ratio to the  shareholders of Raritan in the Merger.  There are no fees
(other than time charges  billed at usual and  customary  rates)  payable to any
consultants,   including  lawyers  and  accountants,  in  connection  with  this
transaction or which would be triggered by consummation  of this  transaction or
the  termination  of the services of such  consultants  by Raritan or any of its
Subsidiaries other than fees which will be payable by Raritan to Endicott.

                  3.6.     Absence of Certain Changes or Events.
                  (a)  There  has not been any  material  adverse  change in the
business,   operations,  assets  or  financial  condition  of  Raritan  and  its
Subsidiaries  on a  consolidated  basis since June 30,  1998 and,  to  Raritan's
knowledge,  no facts or  conditions  exist  (other  than  regional  or  national
economic conditions which affect financial institutions generally) which Raritan
believes will cause or is likely to cause such a material  adverse change in the
future.

                  (b) Except as set forth in the  Raritan  Disclosure  Schedule,
neither  Raritan nor any of its  Subsidiaries  has taken or permitted any of the
actions  set forth in Section  5.2  hereof  between  June 30,  1998 and the date
hereof and Raritan and the Raritan  Subsidiaries  have conducted  their business
only in the ordinary course, consistent with past practice.
                  3.7.  Legal  Proceedings.  Except as  disclosed in the Raritan
Disclosure  Schedule,  neither Raritan nor any of its Subsidiaries is a party to
any, and there are no pending or, to  Raritan's  knowledge,  threatened,  legal,
administrative,  arbitral or other proceedings,  claims, actions or governmental
investigations of any nature ("Legal Proceedings") against Raritan or any of its
Subsidiaries.  Except as disclosed in the Raritan Disclosure  Schedule,  neither
Raritan nor any of its Subsidiaries is a party to any order,  judgment or decree
entered against Raritan or any Raritan Subsidiary in any Legal Proceeding.

                  3.8.     Taxes and Tax Returns.

                  (a) Raritan and each Raritan  Subsidiary  have duly filed (and
until  the  Effective  Time will so file) all  returns,  declarations,  reports,
information returns and statements  ("Returns")  required to be filed by them in
respect of any  federal,  state and local taxes  (including  withholding  taxes,
penalties  or other  payments  required)  and each has duly paid (and  until the
Effective Time will so pay) all such taxes due and payable,  other than taxes or
other charges which are being  contested in good faith (and  disclosed to United
in writing). Raritan and each Raritan Subsidiary have established (and until the
Effective  Time will  establish)  on their  books and records  reserves  for the
payment  of all  federal,  state and local  taxes not yet due and  payable,  but
incurred  in respect of Raritan or any  Raritan  Subsidiary  through  such date,
which  reserves  are, to the knowledge of Raritan,  adequate for such  purposes.
Except as set forth in the Raritan Disclosure  Schedule,  the federal income tax
returns of Raritan  and its  Subsidiaries  have been  examined  by the  Internal
Revenue  Service (the "IRS") (or are closed to examination due to the expiration
of the applicable statute of limitations) and no deficiencies were asserted as a
result  of such  examinations  which  have not been  resolved  and paid in full.
Except as set forth in the Raritan  Disclosure  Schedule,  the applicable  state
income tax returns of Raritan  and its  Subsidiaries  have been  examined by the
applicable  authorities  (or are closed to examination  due to the expiration of
the statute of  limitations)  and no  deficiencies  were asserted as a result of
such  examinations  which  have not  been  resolved  and  paid in  full.  To the
knowledge  of  Raritan,  there are no audits  or other  administrative  or court
proceedings presently pending nor any other disputes pending, or claims asserted
for,  taxes or  assessments  upon  Raritan or any of its  Subsidiaries,  nor has
Raritan or any of its Subsidiaries  given any currently  outstanding  waivers or
comparable consents regarding the application of the statute of limitations with
respect to any taxes or Returns.

                  (b) Except as set forth in the  Raritan  Disclosure  Schedule,
neither Raritan nor any of its  Subsidiaries  (i) has requested any extension of
time within  which to file any tax Return which Return has not since been filed,
(ii) is a party to any  agreement  providing  for the  allocation  or sharing of
taxes, (iii) is required to include in income any adjustment pursuant to Section
481(a)  of the  Code,  by reason of a  voluntary  change  in  accounting  method
initiated  by Raritan  or any  Raritan  Subsidiary  (nor does  Raritan  have any
knowledge that the IRS has proposed any such  adjustment or change of accounting
method) or (iv) has filed a consent  pursuant  to Section  341(f) of the Code or
agreed to have Section 341(f)(2) of the Code apply.

                  3.9.     Employee Benefit Plans.

                  (a) Except as  disclosed in the Raritan  Disclosure  Schedule,
neither  Raritan nor any of its  Subsidiaries  maintains or  contributes  to any
"employee  pension  benefit plan",  within the meaning of Section 3(2)(A) of the
Employee  Retirement  Income  Security Act of 1974,  as amended  ("ERISA")  (the
"Raritan Pension Plans"), "employee welfare benefit plan", within the meaning of
Section 3(1) of ERISA (the "Raritan  Welfare  Plans"),  stock option plan, stock
purchase  plan,  deferred   compensation  plan,   severance  plan,  bonus  plan,
employment  agreement or other similar  plan,  program or  arrangement.  Neither
Raritan nor any of its Subsidiaries has, since September 2, 1974, contributed to
any "Multiemployer Plan", within the meaning of Sections 3(37) and 4001(a)(3) of
ERISA.

                  (b) Raritan has delivered to United in the Raritan  Disclosure
Schedule a complete and accurate copy of each of the  following  with respect to
each of the Raritan Pension Plans and Raritan Welfare Plans:  (i) plan document,
summary  plan  description,  and  summary  of  material  modifications  (if  not
available,  a detailed  description of the  foregoing);  (ii) trust agreement or
insurance contract,  if any; (iii) most recent IRS determination letter, if any;
(iv) most recent actuarial  report, if any; and (v) most recent annual report on
Form 5500.

                  (c) The present value of all accrued  benefits both vested and
non-vested under each of the Raritan Pension Plans subject to Title IV of ERISA,
based  upon the  actuarial  assumptions  used for  purposes  of the most  recent
actuarial  valuation  prepared by such Raritan Pension Plan's  actuary,  did not
exceed the then  current  value of the assets of such  plans  allocable  to such
accrued benefits. To the best of Raritan's knowledge,  the actuarial assumptions
then  utilized for such plans were  reasonable  and  appropriate  as of the last
valuation date and reflect then current market conditions.

                  (d) During the last six years,  the Pension  Benefit  Guaranty
Corporation  (the  "PBGC")  has not  asserted  any claim for  liability  against
Raritan or any of its Subsidiaries which has not been paid in full.

                  (e) All premiums (and interest  charges and penalties for late
payment,  if  applicable)  due to the PBGC with respect to each Raritan  Pension
Plan have been  paid.  All  contributions  required  to be made to each  Raritan
Pension Plan under the terms  thereof,  ERISA or other  applicable law have been
timely made, and all amounts  properly accrued to date as liabilities of Raritan
and its Subsidiaries which have not been paid have been properly recorded on the
books of Raritan and its Subsidiaries.

                  (f) Except as  disclosed on the Raritan  Disclosure  Schedule,
each of the Raritan Pension Plans, the Raritan Welfare Plans and each other plan
and arrangement  identified on the Raritan Disclosure Schedule has been operated
in compliance in all material  respects with the provisions of ERISA,  the Code,
all regulations, rulings and announcements promulgated or issued thereunder, and
all other applicable governmental laws and regulations. Furthermore, the IRS has
issued a favorable determination letter, which takes into account the Tax Reform
Act of 1986 and subsequent  legislation  through the date of such  determination
letter,  with  respect to each of the Raritan  Pension  Plans and Raritan is not
aware of any fact or  circumstance  which would  disqualify any such plan,  that
could not be  retroactively  corrected (in accordance with the procedures of the
IRS).

                  (g) To the  knowledge  of  Raritan,  within  the past two plan
years no non-exempt prohibited  transaction,  within the meaning of Section 4975
of the Code or Section 406 of ERISA,  has  occurred  with  respect to any of the
Raritan Welfare Plans or Raritan Pension Plans.

                  (h) No Raritan  Pension Plan or any trust  created  thereunder
has been  terminated,  nor have there been any "reportable  events",  within the
meaning of Section 4034(b) of ERISA,  with respect to any of the Raritan Pension
Plans.

                  (i) To the  knowledge  of  Raritan,  no  "accumulated  funding
deficiency",  within the meaning of Section 412 of the Code,  has been  incurred
with respect to any of the Raritan Pension Plans.

                  (j) There are no  pending,  or, to the  knowledge  of Raritan,
threatened or anticipated claims (other than routine claims for benefits) by, on
behalf of or against any of the  Raritan  Pension  Plans or the Raritan  Welfare
Plans, any trusts related thereto or any other plan or arrangement identified in
the Raritan Disclosure Schedule.

                  (k) Except as disclosed in the Raritan Disclosure Schedule, no
Raritan Pension or Welfare Plan provides  medical or death benefits  (whether or
not insured)  beyond an employee's  retirement or other  termination of service,
other  than (i)  coverage  mandated  by law,  or (ii) death  benefits  under any
Raritan Pension Plan.

                  (l)  Except  with  respect  to  customary  health,   life  and
disability  benefits or as disclosed in the Raritan Disclosure  Schedule,  there
are no unfunded  benefits  obligations  which are not  accounted for by reserves
shown on the  Raritan  Financial  Statements  and  established  under  GAAP,  or
otherwise noted on such financial statements.

                  (m) Except as  disclosed in the Raritan  Disclosure  Schedule,
with respect to each Raritan  Pension and Welfare Plan that is funded  wholly or
partially through an insurance policy,  there will be no liability of Raritan or
any Raritan  Subsidiary as of the Effective Time under any such insurance policy
or ancillary  agreement with respect to such insurance policy in the nature of a
retroactive  rate  adjustment,  loss  sharing  arrangement  or other  actual  or
contingent  liability  arising wholly or partially out of events occurring prior
to the Effective Time.

                  (n) Except as  hereafter  agreed to by United in writing or as
disclosed  on  the  Raritan  Disclosure   Schedule,   the  consummation  of  the
transactions  contemplated by this Agreement will not (i) entitle any current or
former  employee  of  Raritan  or  any  Raritan  Subsidiary  to  severance  pay,
unemployment compensation or any similar payment, or (ii) accelerate the time of
payment,  accelerate the vesting, or increase the amount, of any compensation or
benefits  due to any  current  employee  or former  employee  under any  Raritan
Pension Plan or Raritan Welfare Plan.

                  3.10.    Reports.

                  (a) The Raritan Disclosure  Schedule lists, and as to item (i)
below Raritan has  previously  delivered or made  available to United a complete
copy of, each (i) final registration statement, prospectus, annual, quarterly or
special report and definitive  proxy statement filed by Raritan since January 1,
1995 pursuant to the  Securities  Act of 1933, as amended  ("1933 Act"),  or the
1934 Act and (ii) communication (other than general advertising materials, press
releases and dividend  checks) mailed by Raritan to its  shareholders as a class
since January 1, 1995.

                  (b) Since  January 1, 1995,  (i) Raritan has filed all reports
that it was  required to file with the SEC under the 1934 Act,  and (ii) Raritan
and the Bank each has duly filed all material forms, reports and documents which
they were required to file with each agency  charged with  regulating any aspect
of their  business,  in each case in form  which  was  correct  in all  material
respects, and, subject to permission from such regulatory  authorities,  Raritan
promptly will deliver or make available to United  accurate and complete  copies
of such  reports.  As of their  respective  dates,  each such form,  report,  or
document  referred  to in either of clauses  (i) or (ii)  above,  and each final
registration  statement,   prospectus,  annual,  quarterly  or  special  report,
definitive proxy statement or communication referred to in either of clauses (i)
or (ii) of  paragraph  (b) above,  complied in all  material  respects  with all
applicable  statutes,  rules and  regulations  and did not  contain  any  untrue
statement of a material  fact or omit to state any material  fact required to be
stated  therein or necessary in order to make the  statements  made therein,  in
light of the circumstances under which they were made, not misleading;  provided
that  information  contained  in any such  document  as of a later date shall be
deemed to modify  information  as of an earlier  date.  The  Raritan  Disclosure
Schedule lists the dates of all examinations of Raritan or the Bank conducted by
either the  Commissioner  or the FDIC since January 1, 1995 and the dates of any
responses thereto submitted by Raritan or the Bank.

                  3.11. Raritan and Bank Information.  The information  relating
to Raritan and the Bank to be contained in the Joint Proxy  Statement/Prospectus
(as defined in Section 5.6(a) hereof) to be delivered to stockholders of Raritan
and  United  in  connection  with the  solicitation  of their  approval  of this
Agreement and the transactions  contemplated  hereby,  as of the dates the Joint
Proxy  Statement/Prospectus  is mailed to  stockholders  of Raritan  and United,
respectively, and up to and including the dates of each of the meetings to which
such Joint  Proxy  Statement/Prospectus  relates,  will not  contain  any untrue
statement of a material fact or omit to state a material fact  necessary to make
the  statements  therein,  in light of the  circumstances  under which they were
made, not misleading.

                  3.12.    Compliance with Applicable Law.

                  (a)  General.  Except as set forth in the  Raritan  Disclosure
Schedule,  each of Raritan  and the  Raritan  Subsidiaries  holds all  licenses,
franchises,  permits and authorizations  necessary for the lawful conduct of its
business under and pursuant to each, and has complied with and is not in default
in any respect under any,  applicable law,  statute,  order,  rule,  regulation,
policy and/or guideline of any federal,  state or local  governmental  authority
relating to Raritan or any of its  Subsidiaries  (other than where such defaults
or  non-compliances  will not, alone or in the  aggregate,  result in a material
adverse  effect on the business,  operations,  assets or financial  condition of
Raritan  and its  Subsidiaries  on a  consolidated  basis) and  Raritan  has not
received  notice of violation of, and does not know of any violations of, any of
the above.

                  (b) CRA. Without limiting the foregoing,  to its knowledge the
Bank has complied in all material  respects with the Community  Reinvestment Act
("CRA")  and Raritan  has  received  no written  notice that any person or group
would object to the  consummation of a merger  involving the Bank due to the CRA
performance of or rating of the Bank. Except as listed on the Raritan Disclosure
Schedule  to the  knowledge  of the  Bank,  no  person  or group  has  adversely
commented upon the Bank's CRA  performance.  The most recent CRA rating received
by the Bank was "Satisfactory."

                  3.13.    Certain Contracts.

                  (a) Except as  disclosed  in the Raritan  Disclosure  Schedule
under  this  Section  or  Section  3.5,  (i)  neither  Raritan  nor any  Raritan
Subsidiary  is a party to or bound by any  contract  or  understanding  (whether
written or oral) with respect to the employment or termination of any present or
former officers,  employees,  directors or consultants and (ii) the consummation
of the  transactions  contemplated  by this  Agreement will not (either alone or
upon the  occurrence  of any  additional  acts or events)  result in any payment
(whether of severance pay or otherwise) becoming due from Raritan or any Raritan
Subsidiary to any officer, employee, director or consultant thereof. The Raritan
Disclosure  Schedule  sets  forth  true and  correct  copies  of all  employment
agreements or termination  agreements with officers,  employees,  directors,  or
consultants to which Raritan or any Raritan Subsidiary is a party.

                  (b) Except as  disclosed in the Raritan  Disclosure  Schedule,
(i) as of the date of this Agreement, neither Raritan nor any Raritan Subsidiary
is a party to or bound by any commitment,  agreement or other  instrument  which
contemplates  the  payment by Raritan or any  Raritan  Subsidiary  of amounts in
excess of $100,000,  or which has a term extending  beyond  November 1, 1998 and
cannot be terminated by Raritan or its subsidiary  without  consent of the other
party  thereto,  (ii) no  commitment,  agreement  or other  instrument  to which
Raritan or any  Raritan  Subsidiary  is a party or by which any of them is bound
limits the freedom of Raritan or any Raritan  Subsidiary  to compete in any line
of  business  or with any  person,  and (iii)  neither  Raritan  nor any Raritan
Subsidiary is a party to any collective bargaining agreement.

                  (c) Except as  disclosed in the Raritan  Disclosure  Schedule,
neither Raritan nor any Raritan Subsidiary nor, to the knowledge of Raritan, any
other party  thereto,  is in default in any material  respect under any material
lease,  contract,  mortgage,  promissory  note,  deed of  trust,  loan or  other
commitment or arrangement.

                  3.14.    Properties and Insurance.

                  (a) Raritan and its  Subsidiaries  have good,  and as to owned
real property marketable,  title to all material assets and properties,  whether
real or personal,  tangible or intangible,  reflected in Raritan's  consolidated
balance  sheet as of June 30,  1998,  or owned and acquired  subsequent  thereto
(except to the extent that such assets and properties  have been disposed of for
fair value in the ordinary  course of business since June 30, 1998),  subject to
no encumbrances,  liens,  mortgages,  security interests or pledges,  except (i)
those items that secure  liabilities that are reflected in such balance sheet or
the notes thereto or incurred in the ordinary  course of business after the date
of such balance sheet,  (ii)  statutory  liens for amounts not yet delinquent or
which are  being  contested  in good  faith,  (iii)  such  encumbrances,  liens,
mortgages,  security interests,  pledges and title imperfections that are not in
the  aggregate  material to the  business,  operations,  assets,  and  financial
condition of Raritan and its Subsidiaries taken as a whole and (iv) with respect
to owned real property,  title imperfections noted in title reports delivered to
United prior to the date hereof.  Raritan and its  Subsidiaries  as lessees have
the right under valid and subsisting leases to occupy,  use, possess and control
all  property  leased by them in all material  respects as  presently  occupied,
used, possessed and controlled by them.

                  (b) The  Raritan  Disclosure  Schedule  lists all  policies of
insurance and bonds covering  business  operations and all insurable  properties
and assets of Raritan and its Subsidiaries showing all risks insured against, in
each case under  valid,  binding and  enforceable  policies or bonds,  with such
amounts and such  deductibles as are specified.  As of the date hereof,  neither
Raritan nor any of its  Subsidiaries  has received any notice of cancellation or
notice of a material  amendment  of any such  insurance  policy or bond or is in
default under such policy or bond, no coverage  thereunder is being disputed and
all material claims thereunder have been filed in a timely fashion.

                  3.15.  Minute  Books.  The  minute  books of  Raritan  and its
Subsidiaries  contain records that are accurate in all material  respects of all
meetings and other corporate  action held of their  respective  stockholders and
Boards  of  Directors  (including  committees  of  their  respective  Boards  of
Directors).

                  3.16.  Environmental  Matters.  Except  as  set  forth  in the
Raritan Disclosure Schedule:

                  (a) Neither  Raritan nor any Raritan  Subsidiary  has received
any written notice, citation,  claim, assessment,  proposed assessment or demand
for abatement  alleging that Raritan or such Raritan Subsidiary (either directly
or as a trustee or fiduciary, or as a  successor-in-interest  in connection with
the  enforcement  of  remedies  to realize  the value of  properties  serving as
collateral for  outstanding  loans) is responsible for the correction or cleanup
of any condition  resulting  from the  violation of any law,  ordinance or other
governmental  regulation regarding  environmental  matters,  which correction or
cleanup  would be  material to the  business,  operations,  assets or  financial
condition of Raritan and the Raritan  Subsidiaries taken as a whole. Raritan has
no knowledge  that any toxic or  hazardous  substances  or  materials  have been
emitted,  generated,  disposed of or stored on any real property owned or leased
by  Raritan  or any  Raritan  Subsidiary,  as OREO or  otherwise,  or  owned  or
controlled  by  Raritan or any  Raritan  Subsidiary  as a trustee  or  fiduciary
(collectively, "Properties"), in any manner that violates or, after the lapse of
time may  violate,  any  presently  existing  federal,  state  or  local  law or
regulation governing or pertaining to such substances and materials.

                  (b) Raritan has no knowledge  that any of the  Properties  has
been  operated  in any  manner  in the  three  years  prior  to the date of this
Agreement that violated any applicable federal, state or local law or regulation
governing or  pertaining to toxic or hazardous  substances  and  materials,  the
violation  of which  would  have a  material  adverse  effect  on the  business,
operations,   assets  or   financial   condition  of  Raritan  and  the  Raritan
Subsidiaries taken as a whole.

                  (c) To the  knowledge  of  Raritan,  there are no  underground
storage tanks on, in or under any of the Properties  and no underground  storage
tanks have been closed or removed from any of the Properties  while the property
was owned, operated or controlled by Raritan or any Raritan Subsidiary.

                  3.17.  Reserves.  The reserve for loan and lease losses in the
June 30, 1998 Raritan Financial Statements was, to Raritan's knowledge, adequate
based  upon past loan  loss  experiences  and  potential  losses in the  current
portfolio to cover all then known or anticipated loan losses.

                  3.18. No Excess Parachute Payments. Except as disclosed in the
Raritan Disclosure Schedule, no officer, director,  employee or agent (or former
officer,  director,  employee or agent) of Raritan or any Raritan  Subsidiary is
entitled now, or will or may be entitled to as a consequence of this  Agreement,
the Merger or the Bank Merger, to any payment or benefit from Raritan, a Raritan
Subsidiary,  United or UNB which if paid or provided would constitute an "excess
parachute  payment",  as  defined  in  Section  280G of the Code or  regulations
promulgated thereunder.

                  3.19.   Year  2000   Compliance.   Raritan   and  the  Raritan
Subsidiaries  have taken all reasonable steps necessary to address the software,
accounting  and record  keeping  issues raised in order for the data  processing
systems used in the business  conducted by Raritan and the Raritan  Subsidiaries
to be substantially Year 2000 compliant on or before the end of 1999 and, except
as set forth in the Raritan  Disclosure  Schedule,  Raritan  does not expect the
future cost of addressing  such issues to be material.  Neither  Raritan nor any
Raritan Subsidiary has received a rating of less than satisfactory from any bank
regulatory agency with respect to Year 2000 compliance.

                  3.20. Agreements with Bank Regulators.  Except as disclosed in
the Raritan Disclosure Schedule, neither Raritan nor any Raritan Subsidiary is a
party to any agreement or memorandum  of  understanding  with, or a party to any
commitment  letter,  board  resolution  submitted to a  regulatory  authority or
similar  undertaking  to, or is  subject to any order or  directive  by, or is a
recipient of any extraordinary  supervisory letter from, any court, governmental
authority or other regulatory or administrative  agency or commission,  domestic
or foreign ("Governmental Entity") which restricts materially the conduct of its
business,  or in any  manner  relates  to its  capital  adequacy,  its credit or
reserve policies or its management,  except for those the existence of which has
been  disclosed  in  writing  to  United  by  Raritan  prior to the date of this
Agreement,  nor has Raritan been advised by any  Governmental  Entity that it is
contemplating  issuing or requesting (or is considering the  appropriateness  of
issuing  or  requesting)  any  such  order,  decree,  agreement,  memorandum  of
understanding,  extraordinary  supervisory letter,  commitment letter or similar
submission,  except as  disclosed  in writing to United by Raritan  prior to the
date of this Agreement.  Neither Raritan nor any Raritan  Subsidiary is required
by Section 32 of the Federal  Deposit  Insurance  Act to give prior  notice to a
Federal banking agency of the proposed addition of an individual to its board of
directors or the  employment  of an individual  as a senior  executive  officer,
except as  disclosed  in writing to United by Raritan  prior to the date of this
Agreement.

                  3.21.  Disclosure.  No representation or warranty contained in
Article III of this Agreement  contains any untrue  statement of a material fact
or omits to state a material fact  necessary to make the  statements  herein not
misleading.

                                   ARTICLE IV

                    REPRESENTATIONS AND WARRANTIES OF UNITED

                  References  herein to the "United  Disclosure  Schedule" shall
mean all of the  disclosure  schedules  required by this Article IV, dated as of
the date hereof and  referenced  to the  specific  sections and  subsections  of
Article IV of this  Agreement,  which have been  delivered on the date hereof by
United to Raritan. United hereby represents and warrants to Raritan as follows:

                  4.1.     Corporate Organization.

                  (a)  United  is  a  corporation  duly  organized  and  validly
existing and in good standing under the laws of the State of New Jersey.  United
has the corporate  power and authority to own or lease all of its properties and
assets and to carry on its  business as it is now being  conducted,  and is duly
licensed or qualified to do business in each jurisdiction in which the nature of
the business  conducted by it or the character or location of the properties and
assets owned or leased by it makes such  licensing or  qualification  necessary,
except  where  the  failure  to be so  licensed  or  qualified  would not have a
material  adverse  effect  on the  business,  operations,  assets  or  financial
condition of United or its Subsidiaries (defined below). United is registered as
a bank holding company under the BHCA.

                  (b) Each of the  Subsidiaries  of  United  are  listed  in the
United  Disclosure  Schedule.  The term "Subsidiary" when used in this Agreement
with reference to United,  means any  corporation,  joint venture,  association,
partnership,  trust or other entity in which United has, directly or indirectly,
at least a 50% interest or acts as a general partner.  Each Subsidiary of United
is duly  organized and validly  existing and in good standing  under the laws of
the jurisdiction of its incorporation. UNB is a national bank whose deposits are
insured  by the  SAIF for  certain  deposits,  and by the BIF for the  remaining
deposits,  in each case to the fullest extent  permitted by law. Each Subsidiary
of  United  has the  corporate  power and  authority  to own or lease all of its
properties and assets and to carry on its business as it is now being  conducted
and is duly licensed or qualified to do business in each  jurisdiction  in which
the nature of the business  conducted by it or the  character or location of the
properties   and  assets  owned  or  leased  by  it  makes  such   licensing  or
qualification necessary, except where the failure to be so licensed or qualified
would not have a material adverse effect on the business,  operations, assets or
financial condition of United and its Subsidiaries.

                  4.2.  Capitalization.  The authorized  capital stock of United
consists of 16,000,000  shares of United  Common Stock and  1,000,000  shares of
preferred  stock ("United  Preferred  Stock").  As of June 30, 1998,  there were
9,375,345 shares of United Common Stock issued and outstanding, including 94,303
treasury  shares and 2,700 shares of  restricted  stock granted under the United
National  Bancorp  Long Term Stock  Based  Incentive  Plan (the  "United  Option
Plan"),  and there were no shares of United Preferred Stock  outstanding.  Since
June 30, 1998, to and including the date of this Agreement, no additional shares
of United Common Stock have been issued except in connection  with  exercises of
options granted under the United Option Plan or grants of restricted stock under
the United Option Plan. As of June 30, 1998, except for 399,772 shares of United
Common  Stock  issuable  upon  exercise of  outstanding  stock  options  granted
pursuant to the United Option Plan and the  Non-Employee  Director  Stock Option
Plan (the "United Director Option Plan"),  there were no shares of United Common
Stock issuable upon the exercise of outstanding stock options or otherwise.  All
issued  and  outstanding  shares of United  Common  Stock,  and all  issued  and
outstanding  shares of capital  stock of United's  Subsidiaries,  have been duly
authorized  and  validly  issued,  are  fully  paid,  nonassessable  and free of
preemptive rights, and are free and clear of all liens,  encumbrances,  charges,
restrictions  or  rights  of third  parties.  All of the  outstanding  shares of
capital stock of United's Subsidiaries are owned by United free and clear of any
liens,  encumbrances,  charges,  restrictions or rights of third parties. Except
for the options  referred  to above under the United  Option Plan and the United
Director Option Plan, neither United nor any of United's  Subsidiaries has or is
bound by any outstanding subscriptions, options, warrants, calls, commitments or
agreements  of any character  calling for the transfer,  purchase or issuance of
any shares of capital stock of United or United's Subsidiaries or any securities
representing the right to otherwise  receive any shares of such capital stock or
any  securities  convertible  into or  representing  the  right to  purchase  or
subscribe for any such shares,  and there are no  agreements  or  understandings
with respect to voting of any such shares.  No additional  grants of awards,  or
exercises of outstanding awards, under the United Option Plan or United Director
Option Plan, or repurchases of United Common Stock,  prior to the Effective Time
shall  be  required  to  be  disclosed  or  reported  to  Raritan  to  keep  the
representations in this section true or correct.
<PAGE>
                  4.3.     Authority; No Violation.

                  (a) United and UNB have full corporate  power and authority to
execute  and  deliver  this  Agreement  and  to  consummate   the   transactions
contemplated hereby in accordance with the terms hereof. United has a sufficient
number of  authorized  but  unissued  shares of United  Common  Stock to pay the
consideration  for the Merger set forth in  Article  II of this  Agreement.  The
execution  and  delivery  of  this  Agreement  and  the   consummation   of  the
transactions  contemplated  hereby  have been duly and  validly  approved by the
Board of Directors of each of United and UNB. The  execution and delivery of the
Bank  Merger  Agreement  has been  duly and  validly  approved  by the  Board of
Directors of UNB. No other  corporate  proceedings on the part of United and UNB
are necessary to consummate the transactions contemplated hereby (except for the
approval by United of the Bank Merger  Agreement and except for any  shareholder
approval that may be required by the NASDAQ/NMS  listing rules).  This Agreement
has  been  duly  and  validly  executed  and  delivered  by  United  and UNB and
constitutes  a valid  and  binding  obligation  of United  and UNB,  enforceable
against United and UNB in accordance  with its terms,  except to the extent that
enforcement  may be  limited  by  (i)  bankruptcy,  insolvency,  reorganization,
moratorium, conservatorship, receivership or other similar laws now or hereafter
in  effect  relating  to or  affecting  the  enforcement  of  creditors'  rights
generally or the rights of creditors of federally-chartered  banks, (ii) general
equitable  principles,  and (iii) laws  relating to the safety and  soundness of
insured depository  institutions and except that no representation is made as to
the effect or availability of equitable remedies or injunctive relief.

                  (b) Neither the  execution or delivery of this  Agreement  nor
the  consummation by United and UNB of the transactions  contemplated  hereby in
accordance  with  the  terms  hereof,  will (i)  violate  any  provision  of the
Certificate of  Incorporation or Bylaws of United or the Articles of Association
or Bylaws of UNB,  (ii) assuming that the consents and approvals set forth below
are duly  obtained,  violate any statute,  code,  ordinance,  rule,  regulation,
judgment,  order, writ, decree or injunction  applicable to United or UNB or any
of their  respective  properties or assets,  or (iii)  violate,  conflict  with,
result in a breach of any provision of, constitute a default (or an event which,
with notice or lapse of time, or both, would constitute a default) under, result
in the termination of, accelerate the performance  required by, or result in the
creation of any lien, security interest, charge or other encumbrance upon any of
the properties or assets of United or UNB under, any of the terms, conditions or
provisions  of any note,  bond,  mortgage,  indenture,  deed of trust,  license,
lease,  agreement or other  instrument or obligation to which United or UNB is a
party,  or by which  United or UNB or any of their  properties  or assets may be
bound or affected,  except, with respect to (ii) and (iii) above, such as in the
aggregate will not have a material  adverse effect on the business,  operations,
assets  or  financial  condition  of  United  and  United's  Subsidiaries  on  a
consolidated  basis,  or  the  ability  of  United  and  UNB to  consummate  the
transactions  contemplated  hereby.  Except for  consents  and  approvals  of or
filings or  registrations  with or notices to the OCC, the OTS, the FRB, the New
Jersey  Secretary  of  State,  the  Delaware  Secretary  of State,  the SEC,  or
applicable state securities bureaus or commissions,  no consents or approvals of
or filings  or  registrations  with or notices to any third  party or any public
body or authority are  necessary on behalf of United or UNB in  connection  with
(a) the  execution  and  delivery  by United or UNB of this  Agreement,  (b) the
consummation  by United of the  Merger and the other  transactions  contemplated
hereby and (c) the  execution  and delivery by UNB of the Bank Merger  Agreement
and  the  consummation  by  UNB  of  the  Bank  Merger  and  other  transactions
contemplated  thereby. To United's knowledge,  no fact or condition exists which
United  has  reason  to  believe  will  prevent  it or UNB  from  obtaining  the
aforementioned consents and approvals.

                  4.4.     Financial Statements.

                  (a) United has  previously  delivered to Raritan copies of the
consolidated  statements  of  financial  condition  of United as of December 31,
1995, 1996 and 1997, the related consolidated  statements of income,  changes in
stockholders' equity and of cash flows for the periods ended December 31 in each
of the three fiscal years 1995 through  1997,  in each case  accompanied  by the
audit  report  of  KPMG  Peat  Marwick  LLP,  the  current   independent  public
accountants  with respect to United,  or Arthur  Andersen,  LLP,  previously the
independent  public  accountants  with  respect  to  United,  and the  unaudited
consolidated  statements  of  condition  of United  as of June 30,  1998 and the
related unaudited  consolidated  statements of income,  changes in stockholders'
equity and cash flows for the six months  then  ended as  reported  in  United's
Quarterly  Report  on  Form  10-Q,  filed  with  the  SEC  under  the  1934  Act
(collectively,   the  "United  Financial  Statements").   The  United  Financial
Statements  (including the related notes), have been prepared in accordance with
GAAP  consistently  applied during the periods  involved  (except as approved by
such independent public accountants and disclosed  therein),  and fairly present
the  consolidated  financial  position of United as of the respective  dates set
forth therein,  and the related  consolidated  statements of income,  changes in
stockholders'  equity and of cash flows  (including  the  related  notes,  where
applicable)  fairly  present  the  results of the  consolidated  operations  and
changes in  stockholders'  equity and of cash flows of United for the respective
fiscal periods set forth therein.

                  (b) The books and records of United and its subsidiaries  have
been and are being  maintained in material  compliance with applicable legal and
accounting requirements, and reflect only actual transactions.

                  (c)  Except  as and  to the  extent  reflected,  disclosed  or
reserved  against  in the  United  Financial  Statements  (including  the  notes
thereto),  as of June 30, 1998 neither United nor any of its Subsidiaries had or
has, as the case may be, any material obligation or liability, whether absolute,
accrued, contingent or otherwise,  material to the business,  operations, assets
or  financial  condition  of  United  or any of its  Subsidiaries  and which are
required by GAAP to be disclosed in the United Financial Statements.  Since June
30, 1998,  neither United nor any of its Subsidiaries have incurred any material
liabilities,  except in the  ordinary  course of business  and  consistent  with
prudent banking practice.

                  4.5.  Brokerage  Fees.  Except  as set  forth  in  the  United
Disclosure  Schedule,  neither  United  nor  UNB  nor  any of  their  respective
directors  or  officers  has  employed  any  broker or finder  or  incurred  any
liability for any broker's or finder's fees or  commissions  in connection  with
any of the transactions contemplated by this Agreement.

                  4.6. Absence of Certain Changes or Events.  There has not been
any material  adverse  change in the business,  operations,  assets or financial
condition of United and United's Subsidiaries on a consolidated basis since June
30, 1998 and to United's  knowledge,  no fact or  condition  exists  (other than
regional or national  economic  conditions which affect  financial  institutions
generally)  which  United  believes  will  cause or is  likely  to cause  such a
material adverse change in the future.

                  4.7. United  Information.  The information  relating to United
and its subsidiaries, this Agreement and the transactions contemplated hereby in
the Registration Statement and Joint Proxy  Statement/Prospectus  (as defined in
Section  5.6(a)  hereof),  as of the dates of the  mailing  of the  Joint  Proxy
Statement/Prospectus to shareholders of United and Raritan, respectively, and up
to  and  including  the  dates  of  each  meeting  to  which  such  Joint  Proxy
Statement/Prospectus  relates,  will  not  contain  any  untrue  statement  of a
material fact or omit to state a material fact  necessary to make the statements
therein,  in  light  of the  circumstances  under  which  they  were  made,  not
misleading.

                  4.8. Capital  Adequacy.  As of the date of this Agreement each
of United and UNB has, and at the Effective  Time,  after taking into effect the
Merger and the transactions  contemplated hereunder, each of United and UNB will
have,   sufficient   capital  to  satisfy  all  applicable   regulatory  capital
requirements.

                  4.9.  United Common Stock.  At the Effective  Time, the United
Common Stock to be issued  pursuant to the terms of Section 2.1, when so issued,
shall be duly authorized,  validly issued, fully paid, and non-assessable,  free
of  preemptive  rights  and  free  and  clear  of  all  liens,  encumbrances  or
restrictions  created by or through United, with no personal liability attaching
to the ownership thereof.

                  4.10.  Legal  Proceedings.  Except as  disclosed in the United
Disclosure Schedule,  neither United nor its Subsidiaries is a party to any, and
there are no pending or, to United's  knowledge,  threatened,  Legal Proceedings
against United or any of its Subsidiaries which, if decided adversely to United,
or  any  of its  Subsidiaries,  would  have a  material  adverse  effect  on the
business,   operations,   assets  or  financial  condition  of  United  and  its
Subsidiaries  on a  consolidated  basis.  Except  as  disclosed  in  the  United
Disclosure Schedule,  neither United nor any of United's Subsidiaries is a party
to any order,  judgment or decree entered  against United or any such Subsidiary
in any Legal  Proceeding  which  would  have a  material  adverse  effect on the
business,   operations,   assets  or  financial  condition  of  United  and  its
Subsidiaries on a consolidated basis.

                  4.11. Taxes and Tax Returns.  United and its Subsidiaries have
duly filed (and until the Effective  Time will so file) all Returns  required to
be filed by them in respect of any  federal,  state and local  taxes  (including
withholding taxes, penalties or other payments required) and have duly paid (and
until the Effective Time will so pay) all such taxes due and payable, other than
taxes or other charges which are being  contested in good faith.  United and its
Subsidiaries  have  established (and until the Effective Time will establish) on
their books and records reserves for the payment of all federal, state and local
taxes not yet due and  payable,  but  incurred  in  respect  of  United  and its
Subsidiaries  through such date, which reserves are, to the knowledge of United,
adequate for such purposes.  No  deficiencies  exist or have been asserted based
upon the federal income tax returns of United and UNB.

                  4.12.    Employee Benefit Plans.

                  (a) United and its  Subsidiaries  maintain  or  contribute  to
certain "employee  pension benefit plans" (the "United Pension Plans"),  as such
term is defined in Section 3 of ERISA, and "employee welfare benefit plans" (the
"United Welfare  Plans"),  as such term is defined in Section 3 of ERISA.  Since
September 2, 1974,  neither United nor its Subsidiaries  have contributed to any
"Multiemployer Plan", as such term is defined in Section 3(37) of ERISA.

                  (b) Each of the  United  Pension  Plans and each of the United
Welfare Plans has been operated in compliance in all material  respects with the
provisions  of ERISA,  the Code,  all  regulations,  rulings  and  announcements
promulgated or issued thereunder, and all other applicable governmental laws and
regulations.

                  (c) The present value of all accrued  benefits both vested and
non-vested  under each of the United Pension Plans subject to Title IV of ERISA,
based  upon the  actuarial  assumptions  used for  purposes  of the most  recent
actuarial  valuation  prepared by such United  Pension Plan's  actuary,  did not
exceed the then  current  value of the assets of such  plans  allocable  to such
accrued benefits.  To the best of United's knowledge,  the actuarial assumptions
then  utilized for such plans were  reasonable  and  appropriate  as of the last
valuation date and reflect then current market conditions.

                  (d) During the last six years,  the PBGC has not  asserted any
claim for liability against United or any of its Subsidiaries which has not been
paid in full.

                  (e) All premiums (and interest  charges and penalties for late
payment, if applicable) due to the PBGC with respect to each United Pension Plan
have been paid.  All  contributions  required to be made to each United  Pension
Plan under the terms  thereof,  ERISA or other  applicable  law have been timely
made, and all amounts  properly accrued to date as liabilities of United and its
Subsidiaries  which have not been paid have been properly  recorded on the books
of United and its Subsidiaries.

                  (f) Except as  disclosed  on the United  Disclosure  Schedule,
each of the United Pension  Plans,  the United Welfare Plans and each other plan
and arrangement  identified on the United Disclosure  Schedule has been operated
in compliance in all material  respects with the provisions of ERISA,  the Code,
all regulations, rulings and announcements promulgated or issued thereunder, and
all other applicable governmental laws and regulations. Furthermore, the IRS has
issued a favorable determination letter, which takes into account the Tax Reform
Act of 1986 and subsequent  legislation  through the date of such  determination
letter, with respect to each of the United Pension Plans and United is not aware
of any fact or circumstance which would disqualify any such plan, that could not
be retroactively corrected (in accordance with the procedures of the IRS).

                  (g) To the knowledge of United, within the past two plan years
no non-exempt prohibited transaction,  within the meaning of Section 4975 of the
Code or Section 406 of ERISA,  has  occurred  with  respect to any of the United
Welfare Plans or United Pension Plans.

                  (h) No United Pension Plan or any trust created thereunder has
been terminated, nor have there been any "reportable events", within the meaning
of Section 4034(b) of ERISA, with respect to any of the United Pension Plans.

                  (i)  To the  knowledge  of  United,  no  "accumulated  funding
deficiency",  within the meaning of Section 412 of the Code,  has been  incurred
with respect to any of the United Pension Plans.

                  4.13.    Reports.

                  (a) Each  communication  mailed by United to its  stockholders
since  January 1, 1995,  and each  annual,  quarterly or special  report,  proxy
statement or  communication,  as of its date,  complied in all material respects
with all applicable  statutes,  rules and regulations enforced or promulgated by
the applicable  regulatory  agency and did not contain any untrue statement of a
material fact or omit to state any material  fact required to be stated  therein
or  necessary  in order to make the  statements  made  therein,  in light of the
circumstances  under  which  they  were  made,  not  misleading;  provided  that
disclosures  as of a later date shall be deemed to modify  disclosures  as of an
earlier date.

                  (b) Since  January 1, 1995,  (i) United has filed all  reports
that it was  required  to file with the SEC under the 1934 Act,  and (ii) United
and UNB each has duly filed all material forms, reports and documents which they
were  required to file with each agency  charged with  regulating  any aspect of
their business, in each case in form which was correct in all material respects,
and,  subject to permission  from such regulatory  authorities,  United promptly
will deliver or make available to Raritan  accurate and complete  copies of such
reports.  As of their  respective  dates,  each such form,  report,  or document
referred to in either of clauses (i) or (ii) above, and each final  registration
statement,  prospectus,  annual,  quarterly or special report,  definitive proxy
statement  or  communication  referred  to in either of  clauses  (i) or (ii) of
paragraph  (b) above,  complied in all  material  respects  with all  applicable
statutes,  rules and regulations  and did not contain any untrue  statement of a
material fact or omit to state any material  fact required to be stated  therein
or  necessary  in order to make the  statements  made  therein,  in light of the
circumstances  under  which  they  were  made,  not  misleading;  provided  that
information contained in any such document as of a later date shall be deemed to
modify  information as of an earlier date. The United Disclosure  Schedule lists
the dates of all  examinations  of United or UNB  conducted by either the OCC or
the FDIC since January 1, 1995 and the dates of any responses  thereto submitted
by United or UNB.

                  4.14.   Compliance   with   Applicable  Law.  United  and  its
Subsidiaries hold all material licenses,  franchises, permits and authorizations
necessary  for the  lawful  conduct  of their  respective  businesses  under and
pursuant  to each,  and has  complied  with and is not in default in any respect
under any,  applicable law,  statute,  order,  rule,  regulation,  policy and/or
guideline  of  any  federal,  state  or  local  governmental  authority  or  the
NASDAQ/NMS  relating  to United  and its  Subsidiaries  (other  than  where such
default or  non-compliance  will not result in a material  adverse effect on the
business,   operations,   assets  or  financial  condition  of  United  and  its
Subsidiaries  on a  consolidated  basis) and United has not  received  notice of
violations of, and does not know of any violations  (other than violations which
will not, alone or in the aggregate,  result in a material adverse effect on the
business   operations,   assets  or  financial   condition  of  United  and  its
Subsidiaries on a consolidated basis) of, any of the above. Without limiting the
foregoing,  to its knowledge UNB has complied in all material  respects with the
CRA and United has  received  no written  notice  that any person or group would
object to the  consummation of a merger involving UNB due to the CRA performance
or rating of UNB.  To the  knowledge  of United,  except as listed on the United
Disclosure  Schedule,  no person or group has adversely commented upon UNB's CRA
performance. The most recent CRA rating received by UNB was "Satisfactory."

                  4.15.    Properties and Insurance.

                  (a) United  and its  Subsidiaries  have good and,  as to owned
real property,  marketable title to all material assets and properties,  whether
real or personal,  tangible or  intangible,  reflected in United's  consolidated
balance  sheet as of June 30,  1998,  or owned and acquired  subsequent  thereto
(except to the extent that such assets and properties  have been disposed of for
fair value in the ordinary  course of business since June 30, 1998).  United and
its Subsidiaries as lessees have the right under valid and subsisting  leases to
occupy,  use,  possess  and  control  all real  property  leased  by them in all
material respects as presently occupied, used, possessed and controlled by them.

                  (b) The business  operations and all insurable  properties and
assets of United and its  Subsidiaries are insured for their benefit against all
risks which,  in the  reasonable  judgment of the management of United should be
insured against, in each case under valid,  binding and enforceable  policies or
bonds,  with such  deductibles  and against  such risks and losses as are in the
opinion of the  management  of United  adequate for the  business  engaged in by
United and its  Subsidiaries.  As of the date hereof,  neither United nor any of
its Subsidiaries has received any notice of cancellation or notice of a material
amendment  of any such  insurance  policy or bond or is in  default  under  such
policy or bond, no coverage thereunder is being disputed and all material claims
thereunder have been filed in a timely fashion.

                  4.16.  Minute  Books.  The  minute  books  of  United  and its
Subsidiaries  contain records that are accurate in all material  respects of all
meetings and other corporate  action held of their  respective  stockholders and
Boards  of  Directors  (including  committees  of  their  respective  Boards  of
Directors).

                  4.17. Environmental Matters. Except as disclosed in the United
Disclosure Schedule, neither United nor any of its Subsidiaries has received any
written notice, citation,  claim, assessment,  proposed assessment or demand for
abatement alleging that United or any of its Subsidiaries (either directly or as
a  successor-in-interest  in  connection  with the  enforcement  of  remedies to
realize the value of properties  serving as collateral for outstanding loans) is
responsible  for the  correction  or clean-up of any  condition  material to the
business,   operations,   assets  or  financial   condition  of  United  or  its
Subsidiaries.  Except as disclosed in the United Disclosure Schedule, United has
no knowledge  that any toxic or  hazardous  substances  or  materials  have been
emitted,  generated,  disposed of or stored on any  property  owned or leased by
United or any of its Subsidiaries,  as OREO or otherwise, or owned or controlled
by United or any of its  Subsidiaries  as a trustee or  fiduciary in any manner,
that violates or, after the lapse of time may violate,  any  presently  existing
federal,  state or local  law or  regulation  governing  or  pertaining  to such
substances and materials,  the violation of which would have a material  adverse
effect on the business,  operations, assets or financial condition of United and
its Subsidiaries on a consolidated basis.

                  4.18.  Reserves.  The  allowance  for possible  loan and lease
losses  in the June 30,  1998  United  Financial  Statements  was,  to  United's
knowledge,  adequate  at the time  based  upon past loan  loss  experiences  and
potential  losses  in the  portfolio  at the  time to cover  all  then  known or
anticipated loan losses.

                  4.19. Year 2000 Compliance. United and the United Subsidiaries
have taken all reasonable  steps  necessary to address the software,  accounting
and record keeping issues raised in order for the data  processing  systems used
in  the  business  conducted  by  United  and  the  United  Subsidiaries  to  be
substantially  Year 2000  compliant on or before the end of 1999 and United does
not expect the future cost of  addressing  such issues to be  material.  Neither
United nor any United Subsidiary has received a rating of less than satisfactory
from any bank regulatory agency with respect to Year 2000 compliance.

                  4.20. Agreements with Bank Regulators.  Except as disclosed in
the United  Disclosure  Schedule,  neither United nor any United Subsidiary is a
party to any agreement or memorandum  of  understanding  with, or a party to any
commitment  letter,  board  resolution  submitted to a  regulatory  authority or
similar  undertaking  to, or is  subject to any order or  directive  by, or is a
recipient of any extraordinary  supervisory letter from, any Governmental Entity
which restricts materially the conduct of its business, or in any manner relates
to its  capital  adequacy,  its credit or reserve  policies  or its  management,
except for those the existence of which has been disclosed in writing to Raritan
by United  prior to the date of this  Agreement,  nor has United been advised by
any Governmental  Entity that it is  contemplating  issuing or requesting (or is
considering  the  appropriateness  of issuing  or  requesting)  any such  order,
decree,  agreement,  memorandum  of  understanding,   extraordinary  supervisory
letter, commitment letter or similar submission,  except as disclosed in writing
to Raritan by United prior to the date of this Agreement. Neither United nor any
United Subsidiary is required by Section 32 of the Federal Deposit Insurance Act
to give prior notice to a Federal banking agency of the proposed  addition of an
individual  to its board of directors or the  employment  of an  individual as a
senior  executive  officer,  except as disclosed in writing to Raritan by United
prior to the date of this Agreement.

                  4.21. Disclosures.  No representation or warranty contained in
Article IV of this Agreement contains any untrue statement of a material fact or
omits to state a  material  fact  necessary  to make the  statements  herein not
misleading. 

                                    ARTICLE V

                            COVENANTS OF THE PARTIES

                  5.1.  Conduct of the  Business of  Raritan.  During the period
from the date of this Agreement to the Effective Time,  Raritan shall, and shall
cause each of its Subsidiaries to, conduct its respective business and engage in
transactions permitted hereunder only in the ordinary course and consistent with
prudent banking practice, except with the prior written consent of United, which
consent will not be unreasonably withheld. Raritan also shall use all reasonable
efforts to (i)  preserve  its  business  organization  and that of each  Raritan
Subsidiary  intact,  (ii) keep  available to itself the present  services of its
employees and those of its  Subsidiaries,  provided that neither Raritan nor any
of its Subsidiaries  shall be required to take any unreasonable or extraordinary
act or any action which would  conflict  with any other term of this  Agreement,
(iii)  preserve for itself and United the goodwill of its customers and those of
its  Subsidiaries  and others with whom business  relationships  exist, and (iv)
take any action which United may reasonably request in order to cause the Merger
to qualify as a pooling of interests for accounting purposes including,  without
limitation,  reissuing  "tainted"  shares of Raritan  Common  Stock if United so
requests.

                  5.2.     Negative Covenants and Dividend Covenants.

                  (a) Raritan  agrees that from the date hereof to the Effective
Time, except as set forth in Section 5.2 of the Raritan  Disclosure  Schedule or
as  otherwise  approved by United in writing or as permitted or required by this
Agreement, it will not, nor will it permit any of its Subsidiaries to:

                  (i) change any provision of its  Certificate of  Incorporation
or Charter, as the case may be, or Bylaws or any similar governing documents;

                  (ii) except for the issuance of Raritan  Common Stock pursuant
to the present  terms of the  outstanding  Raritan  Options and the United Stock
Option and as disclosed in the Raritan Disclosure Schedule, change the number of
shares of its  authorized or issued common or preferred  stock or issue or grant
any  option,  warrant,  call,  commitment,  subscription,  right to  purchase or
agreement of any character relating to the authorized or issued capital stock of
Raritan or any Raritan  Subsidiary or any securities  convertible into shares of
such stock, or split,  combine or reclassify any shares of its capital stock, or
redeem or otherwise  acquire any shares of such capital stock,  or declare,  set
aside or pay any  dividend,  or other  distribution  (whether in cash,  stock or
property or any combination  thereof) in respect of its capital stock, or redeem
or otherwise  acquire any shares of such  capital  stock,  other than  Raritan's
regular  quarterly  cash  dividends  in amounts not to exceed $0.15 per calendar
quarter, with the dividend payment dates to be coordinated with United, it being
the intention of the parties that the shareholders of Raritan receive  dividends
for any  particular  calendar  quarter on either the Raritan Common Stock or the
United Common Stock acquired in exchange  therefor pursuant to the terms of this
Agreement but not both; provided further, that nothing contained herein shall be
deemed to affect the ability of the Bank to pay  dividends on its capital  stock
to Raritan;

                  (iii)  grant any  severance  or  termination  pay (other  than
pursuant to  agreements  or policies of Raritan in effect on the date hereof and
disclosed  in the  Raritan  Disclosure  Schedule  or as  agreed  to by United in
writing) to, or enter into or amend any  employment  agreement  with, any of its
directors,  officers  or  employees,  adopt  any new  employee  benefit  plan or
arrangement of any type or amend any such existing  benefit plan or arrangement;
or award any increase in compensation or benefits to its directors,  officers or
employees;

                  (iv) sell or  dispose of any  substantial  amount of assets or
incur any significant  liabilities other than in the ordinary course of business
consistent with past practices and policies;

                  (v) make any  capital  expenditures  other  than  pursuant  to
binding  commitments  existing on the date hereof and expenditures  necessary to
maintain  existing assets in good repair and expenditures  described in business
plans or budgets previously furnished to United;

                  (vi) file any  applications  or make any contract with respect
to branching or site location or relocation.

                  (vii) agree to acquire in any manner whatsoever (other than to
foreclose on collateral for a defaulted loan) any business or entity;

                  (viii) make any material  change in its accounting  methods or
practices, other than changes required in accordance with GAAP;

                  (ix)  take  any  action  that  would  result  in  any  of  the
representations  and  warranties  contained in Article III of this Agreement not
being true and correct in any material respect at the Effective Time; or

                  (x) agree to do any of the foregoing.

                  (b) United  agrees that from the date hereof to the  Effective
Time,  except as  otherwise  approved by Raritan in writing or as  permitted  or
required  by this  Agreement,  it  will  not,  nor  will  it  permit  any of its
Subsidiaries to:

                  (i) take any action  that is  intended  or may  reasonably  be
expected to result in any of its  representations  and  warranties  set forth in
this Agreement  being or becoming  untrue in any material  respect,  or that may
result in any  condition,  agreement or covenant set forth in this Agreement not
being satisfied;

                  (ii)  take  or  cause  to be  taken  any  action  which  would
disqualify the Merger as a tax free reorganization under Section 368 of the Code
or as a pooling of interests for accounting purposes;

                  (iii)  consolidate  with or merge  with any  other  person  or
entity in which United is not the surviving entity, or convey, transfer or lease
its properties and assets  substantially  as an entirety to any person or entity
unless such person or entity shall  expressly  assume the  obligations of United
under this Agreement; or

                  (iv) authorize or enter into any agreement or commitment to do
any of the foregoing.

                  5.3. No  Solicitation.  So long as this  Agreement  remains in
effect,  Raritan and the Bank shall not,  directly or  indirectly,  encourage or
solicit or hold discussions or negotiations with, or provide any information to,
any person, entity or group (other than United) concerning any merger or sale of
shares of capital stock or sale of substantial  assets or liabilities not in the
ordinary course of business,  or similar  transactions  involving Raritan or the
Bank (an "Acquisition Transaction").  Notwithstanding the foregoing, Raritan may
enter into discussions or negotiations or provide information in connection with
an  unsolicited  possible  Acquisition  Transaction if the Board of Directors of
Raritan,  after  consulting  with  counsel,  determines  in the  exercise of its
fiduciary  responsibilities  that such  discussions  or  negotiations  should be
commenced  or such  information  should be  furnished.  Raritan  shall  promptly
communicate to United the terms of any proposal,  whether written or oral, which
it may receive in respect of any such Acquisition  Transaction and the fact that
it is having discussions or negotiations with a third party about an Acquisition
Transaction.

                  5.4. Current  Information.  During the period from the date of
this  Agreement  to the  Effective  Time,  Raritan will cause one or more of its
designated  representatives  to  confer  on a monthly  basis,  or on such  other
schedule as the parties may mutually agree upon, with  representatives of United
regarding  Raritan's  business,  operations,  properties,  assets and  financial
condition  and  matters   relating  to  the   completion  of  the   transactions
contemplated herein. Without limiting the foregoing,  promptly, but in any event
within 30 days,  after  granting  any new loan or  extension  of credit,  or any
renewal of an  existing  loan or  extension  of credit,  in excess of  $250,000,
Raritan  and the Bank will send United a  description  thereof,  and  thereafter
Raritan will promptly send to United copies of such documents  relating  thereto
as United shall reasonably request. As soon as reasonably  available,  but in no
event more than 45 days after the end of each  fiscal  quarter  (other  than the
last  fiscal  quarter  of  each  fiscal  year)  ending  after  the  date of this
Agreement, Raritan will deliver to United the Bank's call reports filed with the
FDIC and  Raritan's  quarterly  reports on Form 10-Q as filed with the SEC under
the 1934 Act, and United will deliver to Raritan United's  quarterly  reports on
Form  10-Q,  as filed with the SEC under the 1934 Act,  and UNB's  call  reports
filed  with the OCC and the FDIC.  As soon as  reasonably  available,  but in no
event more than 90 days after the end of each fiscal year,  Raritan will deliver
to United and United will deliver to Raritan their respective year end financial
statements and related reports to shareholders and regulatory agencies.

                  5.5.     Access to Properties and Records; Confidentiality.

                  (a)  Raritan and the Bank shall  permit  United and its agents
and  representatives,   including,  without  limitation,   officers,  directors,
employees,   attorneys,   accountants  and  financial  advisors   (collectively,
"Representatives"),   and  United  and  UNB  shall   permit   Raritan   and  its
Representatives,  reasonable  access to their respective  properties,  and shall
disclose and make available to United and its Representatives or Raritan and its
Representatives  as the case may be, all books,  papers and records  relating to
their respective assets, stock ownership,  properties,  operations,  obligations
and liabilities,  including, but not limited to, all books of account (including
the general ledger),  tax records,  minute books of directors' and stockholders'
meetings,  organizational documents,  bylaws, material contracts and agreements,
filings  with  any  regulatory  authority,  independent  auditors'  work  papers
(subject to the receipt by such  auditors  of a standard  access  representation
letter),  litigation files,  plans affecting  employees,  and any other business
activities or prospects in which United and its  Representatives  or Raritan and
its  Representatives  may have a  reasonable  interest.  Neither  party shall be
required to provide  access to or to disclose  information  where such access or
disclosure  would  violate  or  prejudice  the rights of any  customer  or would
contravene  any law,  rule,  regulation,  order or judgment or, in the case of a
document which is subject to an attorney client privilege,  would compromise the
right of the disclosing party to claim that privilege.  The parties will use all
reasonable  efforts to obtain  waivers of any such  restriction  (other than the
attorney  client  privilege)  and  in  any  event  make  appropriate  substitute
disclosure  arrangements  under  circumstances  in which the restrictions of the
preceding  sentence apply.  Raritan  acknowledges that United may be involved in
discussions  concerning  other  potential  acquisitions  and United shall not be
obligated to disclose such  information to Raritan except as such information is
publicly disclosed by United.

                  (b) All information furnished by the parties hereto previously
in  connection  with  transactions  contemplated  by this  Agreement or pursuant
hereto  shall  be  used  solely  for  the  purpose  of  evaluating   the  Merger
contemplated hereby, shall be kept confidential and shall be treated as the sole
property of the party  delivering  the  information  until  consummation  of the
Merger  contemplated  hereby and, if such Merger shall not occur, each party and
each party's  Representatives  shall return to the other party all  documents or
other materials  containing,  reflecting or referring to such information,  will
not retain  any copies of such  information,  shall keep  confidential  all such
information,  and shall not directly or indirectly use such  information for any
competitive  or other  commercial  purposes or any other  purposes not expressly
permitted hereby.  Each party shall inform its  Representatives  of the terms of
this Section 5.5. Any breach of this Section 5.5 by a Representative  of a party
hereto shall conclusively be deemed to be a breach thereof by such party. In the
event that the Merger contemplated hereby is abandoned, all documents, notes and
other  writings  prepared  by a party  hereto  or its  Representatives  based on
information  furnished  by the other  party  shall be  promptly  destroyed.  The
obligation to keep such information  confidential  shall continue for five years
from the date the proposed  Merger is  abandoned  but shall not apply to (i) any
information  which (A) the party  receiving  the  information  can  establish by
convincing  evidence  was  already  in its  possession  prior to the  disclosure
thereof to it by the other party;  (B) was then  generally  known to the public;
(C) became  known to the public  through  no fault of the party  receiving  such
information;  or (D) was disclosed to the party receiving such  information by a
third party not bound by an obligation of  confidentiality;  or (ii) disclosures
pursuant to a legal, regulatory or examination requirement or in accordance with
an order of a court of competent jurisdiction.

                  (c) In addition to all other remedies that may be available to
any party hereto in connection with a breach by any other party hereto of its or
its Representative's obligations under this Section 5.5, each party hereto shall
be entitled to specific  performance and injunctive and other  equitable  relief
with respect to this Section 5.5.  Each party hereto  waives,  and agrees to use
all reasonable efforts to cause its Representatives to waive, any requirement to
secure or post a bond in connection with any such relief.

                  5.6.     Regulatory Matters.

                  (a) For the  purposes  of  holding  the  meetings  of  Raritan
stockholders  and United  shareholders  referred  to in  Section  5.7 hereof and
registering  or  otherwise   qualifying  under  applicable   federal  and  state
securities laws United Common Stock to be issued to Record Holders and Optionees
in  connection  with the  Merger,  the parties  hereto  shall  cooperate  in the
preparation and filing by United of a Registration  Statement with the SEC which
shall include an appropriate joint proxy statement and prospectus satisfying all
applicable requirements of applicable state and federal laws, including the 1933
Act,  the 1934 Act and  applicable  state  securities  laws  and the  rules  and
regulations  thereunder.  (Such joint proxy statement and prospectus in the form
mailed by Raritan to the Raritan  stockholders  and Optionees  together with any
and all amendments or supplements  thereto,  and in the form mailed by United to
the United  shareholders  together with any and all  amendments  or  supplements
thereto,   is   collectively   herein   referred   to  as   the   "Joint   Proxy
Statement/Prospectus"  and the various documents to be filed by United under the
1933 Act with the SEC to register for sale the United  Common Stock to be issued
to Record Holders and Optionees,  including the Proxy Statement/Prospectus,  are
referred to herein as the "Registration Statement").

                  (b) United shall furnish information concerning United and the
Merger as is necessary  in order to cause the Joint Proxy  Statement/Prospectus,
insofar as it relates to United and the Merger,  to comply with  Section  5.6(a)
hereof.  United  agrees  promptly to advise  Raritan if at any time prior to the
Raritan  stockholder  meeting referred to in Section 5.7 hereof, any information
provided by United in the Joint Proxy Statement/Prospectus  becomes incorrect or
incomplete in any material  respect and to provide  Raritan with the information
needed to correct such inaccuracy or omission. United shall furnish Raritan with
such  supplemental  information  as may be necessary in order to cause the Joint
Proxy  Statement/Prospectus,  insofar as it relates to United and the Merger, to
comply with Section 5.6(a) after the mailing thereof to Raritan stockholders and
United shareholders.

                  (c)  Raritan  shall  furnish  United  with  such   information
concerning  Raritan  and the Bank as is  necessary  in order to cause  the Joint
Proxy  Statement/Prospectus,  insofar  as it relates  to such  corporations,  to
comply with Section 5.6(a) hereof.  Raritan agrees promptly to advise United if,
at any time  prior to either  of the  meetings  referred  to in  Section  5.6(a)
hereof,  information provided by Raritan in the Joint Proxy Statement/Prospectus
becomes  incorrect or incomplete in any material  respect and to provide  United
with the  information  needed to correct such  inaccuracy  or omission.  Raritan
shall furnish United with such  supplemental  information as may be necessary in
order to cause the Joint  Proxy  Statement/Prospectus,  insofar as it relates to
Raritan and the Bank, to comply with Section 5.6(a) after the mailing thereof to
Raritan stockholders and United shareholders.

                  (d) United shall  promptly  make such filings as are necessary
in  connection  with the  offering of the United  Common  Stock  pursuant to the
Merger with applicable  state  securities  agencies and shall use all reasonable
efforts to qualify the  offering  of the United  Common  Stock under  applicable
state securities laws at the earliest  practicable date.  Raritan shall promptly
furnish  United with such  information  regarding  the Raritan  stockholders  as
United  requires to enable it to determine what filings are required  hereunder.
Raritan authorizes United to utilize in such filings the information  concerning
Raritan and the Bank provided to United in connection with, or contained in, the
Joint Proxy  Statement/Prospectus.  United shall furnish  Raritan with drafts of
all such filings,  as well as filings with the SEC and all regulatory filings in
connection  with the Merger,  shall  provide  Raritan  with the  opportunity  to
comment  thereon,  and shall keep Raritan advised of the status thereof.  United
shall as promptly as practicable file the Registration  Statement containing the
Joint Proxy  Statement/Prospectus  with the SEC,  and each of United and Raritan
shall promptly notify the other of all communications, oral or written, with the
SEC    concerning   the    Registration    Statement   and   the   Joint   Proxy
Statement/Prospectus.

                  (e) United shall cause the United Common Stock to be issued in
connection with the Merger to be listed on the NASDAQ/NMS.

                  (f) The parties  hereto will cooperate with each other and use
all  reasonable  efforts to prepare all necessary  documentation,  to effect all
necessary  filings  and to obtain  all  necessary  permits,  consents,  waivers,
approvals  and  authorizations  of all third  parties  and  governmental  bodies
necessary to consummate the transactions  contemplated by this Agreement as soon
as  possible,  including,  without  limitation,  those  required by the OCC, the
Commissioner,  the State of New Jersey,  the FDIC and the FRB. The parties shall
each  have the  right to  review  in  advance  (and  shall do so  promptly)  all
information  relating  to the  other,  as the  case  may be,  and  any of  their
respective  subsidiaries,  which  appears  in any filing  made with,  or written
material  submitted to, any third party or governmental  body in connection with
the  transactions  contemplated by this Agreement.  The parties hereto shall use
reasonable  business  efforts to file for approval or waiver by the  appropriate
bank regulatory agencies within 60 days of the date hereof.

                  (g) Each of the parties will promptly  furnish each other with
copies of written  communications  received  by them or any of their  respective
subsidiaries  from, or delivered by any of the  foregoing  to, any  governmental
body in respect of the transactions contemplated hereby.

                  (h)  Raritan  acknowledges  that United is in or may be in the
process  of  acquiring  other  banks  and  financial  institutions  and  that in
connection  with  such  acquisitions,  information  concerning  Raritan  may  be
required to be included in the registration statements,  if any, for the sale of
securities  of United or in SEC reports in  connection  with such  acquisitions.
Raritan agrees to provide United with any information,  certificates,  documents
or other materials  about Raritan as are reasonably  necessary to be included in
such  other SEC  reports  or  registration  statements,  including  registration
statements  which may be filed by United prior to the  Effective  Time.  Raritan
shall use its  reasonable  efforts to cause its  attorneys  and  accountants  to
provide  United and any  underwriters  for  United  with any  consents,  comfort
letters, opinion letters, reports or information which are necessary to complete
the  registration  statements  and  applications  for any  such  acquisition  or
issuance of securities.  United shall reimburse Raritan for reasonable  expenses
thus incurred by Raritan  should this  Agreement be  terminated  for any reason.
United  shall  not file with the SEC any  registration  statement  or  amendment
thereto or supplement  thereof containing  information  regarding Raritan unless
Raritan shall have consented in writing to such filing,  which consent shall not
be unreasonably delayed or withheld.

                  (i) Between the date of this Agreement and the Effective Time,
Raritan shall cooperate with United to be in a position as of the Effective Time
to reasonably  conform Raritan's  policies and procedures  regarding  applicable
regulatory  matters  to those of United as United  may  reasonably  identify  to
Raritan from time to time.

                  5.7.     Approval of Stockholders.

                  (a) Raritan will (i) take all steps reasonably  necessary duly
to call,  give  notice of,  convene  and hold a meeting of the  stockholders  of
Raritan  as soon as  reasonably  practicable  for the  purpose of  securing  the
approval by such  stockholders of this  Agreement,  (ii subject to the fiduciary
responsibilities  of the Board of  Directors of Raritan to the  stockholders  of
Raritan, recommend to the stockholders of Raritan the approval of this Agreement
and the  transactions  contemplated  hereby  and use all  reasonable  efforts to
obtain,  as promptly as  practicable,  such  approvals,  and (iii) cooperate and
consult with United with respect to each of the foregoing matters. In connection
therewith, Raritan will use reasonable efforts to cause each director of Raritan
to agree,  (x) to vote in favor of the  Merger,  and (y) take such  action as is
necessary or is reasonably required by United to consummate the Merger.

                  (b) United will (i) take all steps  reasonably  necessary duly
to call,  give  notice of,  convene  and hold a meeting of the  stockholders  of
United  as soon as  reasonably  practicable  for the  purpose  of  securing  the
approval by such  stockholders of this  Agreement,  (ii subject to the fiduciary
responsibilities  of the Board of  Directors  of United to the  stockholders  of
United,  recommend to the  stockholders of United the approval of this Agreement
and the  transactions  contemplated  hereby  and use all  reasonable  efforts to
obtain,  as promptly as  practicable,  such  approvals,  and (iii) cooperate and
consult  with  Raritan  with  respect  to  each  of the  foregoing  matters.  In
connection therewith,  United will use reasonable efforts to cause each director
of United to agree, (x) to vote in favor of the Merger, and (y) take such action
as is necessary or is reasonably required by Raritan to consummate the Merger.

                  5.8. Further  Assurances.  Subject to the terms and conditions
herein provided, each of the parties hereto agrees to use all reasonable efforts
to take, or cause to be taken,  all actions and to do, or cause to be done,  all
things  reasonably  necessary,  proper or advisable  under  applicable  laws and
regulations  to satisfy the  conditions  to Closing and to  consummate  and make
effective the transactions  contemplated by this Agreement,  including,  without
limitation,  using  reasonable  efforts to lift or  rescind  any  injunction  or
restraining order or other order adversely  affecting the ability of the parties
to consummate  the  transactions  contemplated  by this  Agreement and using all
reasonable  efforts  to  prevent  the  breach of any  representation,  warranty,
covenant or agreement of such party  contained or referred to in this  Agreement
and to promptly  remedy the same.  Nothing in this section shall be construed to
require any party to participate  in any threatened or actual Legal  Proceedings
(other  than Legal  Proceedings  to which it is  otherwise a party or subject or
threatened to be made a party or subject) in connection with consummation of the
transactions  contemplated by this Agreement  unless such party shall consent in
advance  and in  writing to such  participation  and the other  party  agrees to
reimburse and indemnify such party for and against any and all costs and damages
related thereto.

                  5.9. Public Announcements.  The parties hereto shall cooperate
with each other, and obtain each other's prior approval,  in the development and
distribution of all news releases and other public  disclosures  with respect to
this Agreement or any of the transactions  contemplated hereby, except as may be
otherwise  required by law or regulation or as to which the party releasing such
information  has used all reasonable  efforts to discuss with the other party in
advance.

                  5.10. Failure to Fulfill Conditions.  In the event that United
or Raritan  determines that a material condition to its obligation to consummate
the transactions contemplated hereby cannot be fulfilled on or prior to June 30,
1999 (the  "Cutoff  Date")  and that it will not waive that  condition,  it will
promptly  notify  the  other  party.   Except  for  any  acquisition  or  merger
discussions  United may enter into with other  parties,  Raritan and United will
promptly  inform  the  other of any  facts  applicable  to  Raritan  or  United,
respectively, or their respective directors or officers, that would be likely to
prevent or materially delay approval of the Merger by any governmental authority
or which would otherwise prevent or materially delay completion of the Merger.

                  5.11. Disclosure  Supplements.  From time to time prior to the
Effective Time, each party hereto will promptly  supplement or amend (by written
notice to the other) its  respective  Disclosure  Schedules  delivered  pursuant
hereto  with  respect  to any  matter  hereafter  arising  which,  if  existing,
occurring or known at the date of this Agreement, would have been required to be
set forth or  described  in such  Schedules or which is necessary to correct any
information  in such  Schedules  which has been rendered  materially  inaccurate
thereby. For the purpose of determining satisfaction of the conditions set forth
in Article VI, no  supplement  or amendment to such  Schedules  shall correct or
cure any warranty which was untrue when made, but  supplements or amendments may
be used to disclose  subsequent  facts or events to maintain the truthfulness of
any warranty.

                  5.12     Transaction Expenses of Raritan.

                  (a) To the extent not already done,  Raritan  shall  promptly,
but in any event within 30 days,  after the execution of this  Agreement ask all
of its attorneys and other  professionals to render current and correct invoices
for all unbilled  time and  disbursements,  and request  that its  professionals
render  monthly  invoices  within 30 days after the end of each  month.  Raritan
shall accrue and/or pay all of such amounts as soon as possible.

                  (b) United and Raritan  shall  jointly  make all  arrangements
with    respect   to   the   printing   and   mailing   of   the   Joint   Proxy
Statement/Prospectus.

                  5.13.  Closing.  The parties  hereto shall  cooperate  and use
reasonable  efforts to try to cause the Effective Time to occur during  January,
1999.

                  5.14.    Indemnification.

                  (a) For a period of six years after the Effective Time, United
shall indemnify, defend and hold harmless each person who is now, or has been at
any time prior to the date hereof or who becomes prior to the Effective  Time, a
director  or officer of Raritan or the Bank  (collectively,  the  "Indemnitees")
against  any and all  claims,  damages,  liabilities,  losses,  costs,  charges,
expenses (including, without limitation,  reasonable costs of investigation, and
the reasonable  fees and  disbursements  of legal counsel and other advisers and
experts  as  incurred),   judgments,   fines,  penalties  and  amounts  paid  in
settlement,  asserted  against,  incurred by or imposed upon any  Indemnitee  by
reason of the fact that he or she is or was a director  or officer of Raritan or
the Bank or acted as a  director  or  officer  of a third  party at the  written
request of Raritan or the Bank, in connection  with,  arising out of or relating
to any  threatened,  pending or  completed  claim,  action,  suit or  proceeding
(whether civil, criminal,  administrative or investigative),  including, without
limitation, any and all claims, actions, suits, proceedings or investigations by
or on  behalf  of or in the right of or  against  Raritan  or the Bank or any of
their respective affiliates,  or by any former or present shareholder of Raritan
or the Bank (each a "Claim"  and  collectively,  "Claims"),  including,  without
limitation,  any Claim which is based upon,  arises out of or in any way relates
to the Merger, the Joint Proxy Statement/Prospectus,  this Agreement, any of the
transactions  contemplated  by this  Agreement,  the  Indemnitee's  service as a
member of the Board of Directors of Raritan or the Bank or any committee of such
board, the events leading up to the execution of this Agreement,  any statement,
announcement,  recommendation  or solicitation  made in connection  therewith or
related  thereto (or the absence of any of the  foregoing) and any breach of any
duty in connection with any of the foregoing, in each case to the fullest extent
which Raritan or the Bank, as the case may be, would have been  permitted  under
any applicable  law and its  Certificate  of  Incorporation  and By-Laws had the
Merger not occurred  (and United shall also advance  expenses as incurred to the
fullest extent so permitted).

                  (b) From and after the Effective Time, United shall assume and
honor any obligation of Raritan or the Bank  immediately  prior to the Effective
Time with respect to the  indemnification of the Indemnitees  arising out of the
Certificate of Incorporation or By-Laws of Raritan or the Bank or arising out of
any  written  indemnification  agreements  between  Raritan or the Bank and such
persons  disclosed in the Raritan  Disclosure  Schedule,  as if such obligations
were pursuant to a contract or arrangement  between United and such Indemnitees,
including the obligation to advance expenses  pursuant to Raritan's  Certificate
of Incorporation and Bylaws.

                  (c) In the event  United or any of its  successors  or assigns
(i)  reorganizes  or  consolidates  with or merges into or enters  into  another
business combination  transaction with any other person or entity and is not the
resulting,  continuing or surviving corporation or entity of such consolidation,
merger  or  transaction,  or (ii)  liquidates,  dissolves  or  transfers  all or
substantially  all of its properties  and assets to any person or entity,  then,
and in each such case, proper provision shall be made so that the successors and
assigns of United assume the obligations set forth in this Section 5.14.

                  (d) United shall cause  Raritan's and the Bank's  officers and
directors  to be covered,  for a period of six years after the  Effective  Time,
under (i) United's then current  officers' and  directors'  liability  insurance
policy or (ii) an extension of Raritan's or the Bank's  existing  officers'  and
directors' liability insurance policy. However, United shall only be required to
insure  such  persons  upon  terms and for  coverages  substantially  similar to
Raritan's or the Bank's existing officers' and directors'  liability  insurance,
as the case may be.

                  (e) Any Indemnitee wishing to claim indemnification under this
Section 5.14 shall  promptly  notify United upon learning of any Claim,  but the
failure to so notify  shall not relieve  United of any  liability it may have to
such  Indemnitee if such failure does not materially  prejudice  United.  In the
event of any Claim (whether  arising  before or after the Effective  Time) as to
which  indemnification  under this Section 5.14 is applicable,  (x) United shall
have the right to assume the defense  thereof and United  shall not be liable to
such  Indemnitees  for any legal expenses of other counsel or any other expenses
subsequently incurred by such Indemnitee in connection with the defense thereof,
except  that if United  elects not to assume  such  defense,  or counsel for the
Indemnitees  advises  that there are issues  which raise  conflicts  of interest
between  United  and  the  Indemnitees,   the  Indemnitees  may  retain  counsel
satisfactory  to them, and United shall pay the reasonable  fees and expenses of
such counsel for the Indemnitees as statements therefor are received;  provided,
however,  that United shall be obligated pursuant to this Section 5.14(e) to pay
for  only one firm of  counsel  for all  Indemnitees  in any  jurisdiction  with
respect to a matter unless the use of one counsel for multiple Indemnitees would
present  such  counsel  with a conflict of interest  that is not waivable by the
Indemnitees,  and (y) the Indemnitees  will cooperate in the defense of any such
matter.  United  shall not be liable  for  settlement  of any  claim,  action or
proceeding  hereunder  unless such settlement is effected with its prior written
consent.  Notwithstanding  anything to the contrary in this Section 5.14, United
shall not have any obligation hereunder to any Indemnitee when and if a court of
competent jurisdiction shall ultimately determine,  and such determination shall
have become final and nonappealable, that the indemnification of such Indemnitee
in the manner  contemplated  hereby is prohibited  by  applicable  law or public
policy.

                  5.15. New United and UNB Directors.  As of the Effective Time,
United shall cause its Board of Directors and the UNB Board of Directors to take
action to appoint to the Boards of Directors of United and UNB, respectively, at
the  Effective  Time,  Arlyn D. Rus and one other current  Raritan  director who
shall be proposed by Raritan and approved by United.  Such persons will serve on
separate  classes of the Board of Directors of United and Mr. Rus shall serve as
Vice  Chairman of the Board of United.  As of the Effective  Time,  United shall
cause the UNB Board of Directors  to take action to create an advisory  Board of
Directors and to invite all then  directors of Raritan to serve on such advisory
board.

                  5.16.  Employment  Matters.  In  connection  with the  Merger,
United  and  Raritan  will deal with  employment  and  severance  contracts  and
arrangements  with  officers and employees of Raritan and the Bank in the manner
set forth in Section 5.16 of the
            
Raritan Disclosure Schedule.


                  5.17. Pooling and Tax-Free Reorganization  Treatment.  Neither
United nor Raritan shall  intentionally  take, fail to take or cause to be taken
or not be taken,  any action  within its  control,  whether  before or after the
Effective  Time,  which would  disqualify the Merger as a "pooling of interests"
for accounting  purposes or as a "reorganization"  within the meaning of Section
368(a) of the Code.

                  5.18. Raritan Option Plans. From and after the Effective Time,
each Raritan  Option which is converted to an option to purchase  United  Common
Stock under Section 2.1(b) shall be administered,  operated and interpreted by a
committee  comprised of members of the Board of Directors of United appointed by
the Board of  Directors  of United  (including  one or more former  directors of
Raritan).  United  shall  reserve  for  issuance  the number of shares of United
Common Stock necessary to satisfy United's obligations.
United shall also register,  if not previously  registered  pursuant to the 1933
Act, the shares authorized for issuance under the Raritan Options so converted.

                  5.19.    Affiliates.

                  (a)  Promptly,  but in any  event  within  30 days,  after the
execution  and delivery of this  Agreement,  (i) Raritan shall deliver to United
(x) a letter  identifying  all persons who, to the knowledge of Raritan,  may be
deemed to be  affiliates  of Raritan  under Rule 145 of the 1933 Act,  including
without  limitation  all directors  and executive  officers of Raritan and (y) a
letter  identifying all persons who, to the knowledge of Raritan,  may be deemed
to be  affiliates  of Raritan as that term  (affiliate)  is used for purposes of
qualifying for pooling-of-interests  accounting treatment; and (ii) United shall
identify to Raritan all persons who, to the  knowledge of United,  may be deemed
affiliates  of  United  as that  term  (affiliates)  is  used  for  purposes  of
qualifying for pooling-of-interests accounting treatment.

                  (b)  Raritan  shall  cause each  director  of Raritan  to, and
Raritan  shall use all  reasonable  efforts to cause each  executive  officer of
Raritan and each other person who may be deemed an  affiliate of Raritan  (under
either Rule 145 of the 1933 Act or the accounting  treatment  rules) to, execute
and deliver to United  within 30 days after the  execution  and delivery of this
Agreement, a letter substantially in the form of Exhibit 5.19 hereto agreeing to
be bound by the  restrictions  of Rule 145 and agreeing to be bound by the rules
which permit the Merger to be treated as a pooling of interests  for  accounting
purposes. In addition, United shall cause each director and executive officer of
United  to,  and  United  shall use all  reasonable  efforts to cause each other
person  who may be  deemed  an  affiliate  of  United  (as that term is used for
purposes of  qualifying  for pooling of  interests)  to,  execute and deliver to
United  within 30 days after the  execution  and delivery of this  Agreement,  a
letter  substantially in the form of Exhibit 5.19.1 hereto in which such persons
agree to be bound by the  rules  which  permit  the  Merger to be  treated  as a
pooling of interests for accounting treatment.

                  (c) United shall use reasonable business efforts to publish as
soon as  possible,  but no later than 20 days  after the end of the first  month
after the  Effective  Time in which  there  are at least 30 days of  post-Merger
combined operations, combined revenues and net income figures as contemplated by
and in accordance with the terms of SEC Accounting Series Release No. 135.

                  5.20.  Compliance  with  the  Industrial  Site  Recovery  Act.
Raritan,  at its sole cost and  expense,  shall use all  reasonable  efforts  to
obtain prior to the Effective Time, with respect to each facility located in New
Jersey  owned  or  operated  by  Raritan  or any  Raritan  Subsidiary  (each,  a
"Facility"),  either:  (a) a Letter of  Non-Applicability  ("LNA")  from the New
Jersey  Department  of  Environmental  Protection  ("NJDEP")  stating  that  the
Facility is not an "industrial establishment," as such term is defined under the
Industrial Site Recovery Act ("ISRA"); (b) a Remediation Agreement issued by the
NJDEP  pursuant  to  ISRA  authorizing  the  consummation  of  the  transactions
contemplated by this Agreement;  (c) a Negative Declaration  approval,  Remedial
Action  Workplan  approval,  No  Further  Action  letter  or other  document  or
documents  issued by the NJDEP advising that the  requirements of ISRA have been
satisfied  with respect to the Facility;  or (d) an opinion  addressed to United
from New Jersey legal counsel reasonably acceptable to United to the effect that
ISRA has been complied with, or is  inapplicable,  with respect to the Facility.
In the event Raritan obtains a Remediation Agreement,  Raritan will post or have
posted an  appropriate  Remediation  Funding  Source or will have  obtained  the
NJDEP's approval to self-guaranty any Remediation  Funding Source required under
any such Remediation Agreement.

                                   ARTICLE VI

                               CLOSING CONDITIONS

                  6.1.   Conditions  of  Each  Party's  Obligations  Under  this
Agreement.  The  respective  obligations  of each party under this  Agreement to
consummate  the  Merger  shall  be  subject  to  the  satisfaction,   or,  where
permissible  under  applicable  law, waiver at or prior to the Effective Time of
the following conditions:

                  (a) Approval of Raritan Stockholders;  SEC Registration.  This
Agreement and the transactions  contemplated  hereby shall have been approved by
the  requisite  vote of the  stockholders  of Raritan  and the  shareholders  of
United. The Registration Statement shall have been declared effective by the SEC
and shall not be subject to a stop order or any threatened  stop order,  and the
issuance of the United  Common  Stock shall have been  qualified  in every state
where such qualification is required under the applicable state securities laws.
The United  Common Stock to be issued in connection  with the Merger,  including
United  Common  Stock to be issued  for the  Raritan  Options,  shall  have been
approved for listing on the NASDAQ/NMS.

                  (b)   Regulatory   Filings.   All   necessary   regulatory  or
governmental  approvals and consents  (including without limitation any required
approval  of the  Commissioner,  the FDIC,  the OCC and any  approval  or waiver
required by the FRB) required to consummate the transactions contemplated hereby
shall have been obtained  without any term or condition  which would  materially
impair  the value of Raritan  and the Bank,  taken as a whole,  to  United.  All
conditions  required to be satisfied prior to the Effective Time by the terms of
such approvals and consents shall have been satisfied; and all statutory waiting
periods in respect thereof shall have expired.

                  (c) Suits and Proceedings.  No order, judgment or decree shall
be  outstanding  against a party  hereto or a third  party  that  would have the
effect of preventing  completion  of the Merger;  no Legal  Proceeding  shall be
pending or threatened by any governmental body in which it is sought to restrain
or prohibit the Merger or the Bank Merger.

                  (d) Tax Free Exchange.  United and Raritan shall have received
an opinion, satisfactory to United and Raritan, of Pitney, Hardin, Kipp & Szuch,
counsel for United, issued in reliance on tax representation letters from United
and Raritan that are customary and reasonable  under the  circumstances,  to the
effect that the transactions contemplated hereby will result in a reorganization
(as defined in Section 368(a) of the Code), and accordingly no gain or loss will
be recognized  for federal  income tax purposes to United,  Raritan,  UNB or the
Bank or to the  stockholders of Raritan who exchange their shares of Raritan for
United  Common  Stock  (except to the extent  that cash is  received  in lieu of
fractional shares of United Common Stock).
<PAGE>
                  (e) Pooling of Interests.  The Merger shall be qualified to be
treated by United as a  pooling-of-interests  for accounting purposes and United
shall have  received a letter from KPMG Peat  Marwick LLP to the effect that the
Merger will qualify for pooling-of-interests  accounting treatment if closed and
consummated in accordance with this Agreement.

                  6.2.  Conditions  to the  Obligations  of  United  Under  this
Agreement.  The  obligations  of United  under this  Agreement  shall be further
subject to the satisfaction or waiver, at or prior to the Effective Time, of the
following conditions:

                  (a) Representations and Warranties; Performance of Obligations
of Raritan and Bank. The  representations and warranties of Raritan contained in
this Agreement,  other than  representations  and warranties which are expressly
stated  to be made as of the date  hereof or as of any  other  particular  date,
shall be true and  correct on the  Closing  Date as though made on and as of the
Closing  Date.  Raritan  shall  have  performed  in all  material  respects  the
agreements,  covenants and obligations  necessary to be performed by it prior to
the Closing Date. With respect to any representation or warranty which as of the
Closing Date has required a  supplement  or amendment to the Raritan  Disclosure
Schedule to render such  representation  or warranty  true and correct as of the
Closing Date, the  representation  and warranty shall be deemed true and correct
as of the Closing Date only if (i) the  information  contained in the supplement
or amendment to the Disclosure  Schedule related to events  occurring  following
the execution of this Agreement and (ii) the facts  disclosed in such supplement
or amendment would not either alone,  or together with any other  supplements or
amendments to the Raritan Disclosure  Schedule,  materially adversely effect the
representation as to which the supplement or amendment relates.  In interpreting
this Section 6.2(a) and Section 7.1(d) hereof,  no representation or warranty of
Raritan shall be deemed untrue or incorrect,  and Raritan shall not be deemed to
have breached a representation or warranty,  as a consequence of any fact, event
or circumstance  unless such fact, event or circumstance,  individually or taken
together with all other facts,  events or  circumstances  inconsistent  with any
representation  or warranty of Raritan contained in this Agreement has had or is
reasonably  likely to have a material  adverse  effect on Raritan  and the Bank,
taken as a whole, from that disclosed by Raritan on the date of this Agreement.

                  (b) Consents.  United shall have received the written consents
of any person whose consent to the transactions  contemplated hereby is required
under the applicable instrument.

                  (c) Opinion of Counsel.  United shall have received an opinion
of counsel to  Raritan,  dated the date of the  Closing,  in form and  substance
reasonably  satisfactory  to United,  covering the matters set forth on Schedule
6.2 hereto and any other matters reasonably requested by United.

                  (d) Bank  Action.  The Bank  shall  have  taken all  necessary
corporate  action  to  effectuate  the Bank  Merger  immediately  following  the
Effective Time.

                  (e)  Certificates.  Raritan shall have  furnished  United with
such certificates of its officers or other documents to evidence  fulfillment of
the conditions set forth in this Section 6.2 as United may reasonably request.

                  (f) Environmental Law Compliance. Raritan shall have obtained,
with  respect to each  Facility,  an LNA, a  Remediation  Agreement,  a Negative
Declaration  approval,  a Remedial  Action  Workplan  approval  (in which  event
Raritan will post or have posted an  appropriate  Remediation  Funding Source or
will have obtained the NJDEP's approval to self-guaranty any Remediation Funding
Source  required  under any such  Remediation  Agreement),  a No Further  Action
letter or other  document or  documents  issued by the NJDEP  advising  that the
requirements  of ISRA have been  satisfied  with  respect to the  Facility or an
opinion of the type referred to in Section 5.20(d) hereof.

                  6.3.  Conditions  to the  Obligations  of  Raritan  Under this
Agreement.  The  obligations  of Raritan under this  Agreement  shall be further
subject to the satisfaction or waiver, at or prior to the Effective Time, of the
following conditions:

                  (a) Representations and Warranties; Performance of Obligations
of United.  The  representations  and  warranties  of United  contained  in this
Agreement,  other than representations and warranties which are expressly stated
to be made as of the date hereof or as of any other  particular  date,  shall be
true and correct in all material  respects on the Closing Date as though made on
and  as of the  Closing  Date.  United  shall  have  performed  in all  material
respects, the agreements,  covenants and obligations to be performed by it prior
to the Closing Date. With respect to any  representation or warranty which as of
the Closing Date has required a supplement or amendment to the United Disclosure
Schedule to render such  representation  or warranty  true and correct as of the
Closing Date, the  representation  and warranty shall be deemed true and correct
as of the Closing Date only if (i) the  information  contained in the supplement
or amendment to the Disclosure  Schedule related to events  occurring  following
the execution of this Agreement and (ii) the facts  disclosed in such supplement
or amendment would not either alone,  or together with any other  supplements or
amendments to the United Disclosure  Schedule,  materially  adversely effect the
representation as to which the supplement or amendment relates.  In interpreting
this Section 6.3(a) and Section 7.1(e) hereof,  no representation or warranty of
United shall be deemed  untrue or  incorrect,  and United shall not be deemed to
have breached a representation or warranty,  as a consequence of any fact, event
or circumstance  unless such fact, event or circumstance,  individually or taken
together with all other facts,  events or  circumstances  inconsistent  with any
representation  or warranty of United  contained in this Agreement has had or is
reasonably  likely to have a material adverse effect on United and UNB, taken as
a whole, from that disclosed by United on the date of this Agreement.

                  (b) Opinion of Counsel to United.  Raritan shall have received
an opinion of counsel  to  United,  dated the date of the  Closing,  in form and
substance reasonably satisfactory to Raritan,  covering the matters set forth on
Schedule 6.3 hereto and any other matter reasonably requested by Raritan.

                  (c) Fairness  Opinion.  Raritan shall have received an opinion
from  Endicott  as of the date of this  Agreement  and the date the Joint  Proxy
Statement/Prospectus  is mailed to Raritan's  stockholders,  with respect to the
fairness,  from a  financial  point  of  view,  of  the  Exchange  Ratio  to the
shareholders of Raritan in the Merger.

                  (d) Raritan Directors. Each of United and UNB shall have taken
all action  necessary to appoint two current  Raritan  directors to its Board of
Directors as specified in Section 5.15.

                  (e)  Certificates.  United shall have  furnished  Raritan with
such certificates of its officers or others and such other documents to evidence
fulfillment  of the  conditions  set forth in this  Section  6.3 as Raritan  may
reasonably request.

                  (f) UNB Action.  UNB shall have taken all necessary  corporate
action to effectuate the Bank Merger immediately following the Effective Time.

                                   ARTICLE VII

                        TERMINATION, AMENDMENT AND WAIVER

                  7.1.  Termination.  This Agreement may be terminated  prior to
the Effective  Time,  whether  before or after approval of this Agreement by the
stockholders of Raritan:

                  (a)      By mutual written consent of the parties hereto.

                  (b) By United or Raritan (i) if the  Effective  Time shall not
have  occurred  on or  prior  to the  Cutoff  Date  or  (ii)  if a  vote  of the
stockholders  of Raritan  is taken and such  stockholders  fail to approve  this
Agreement at the meeting (or any adjournment  thereof) held for such purpose, or
(iii) if a vote of the  shareholders  of United  is taken and such  shareholders
fail to approve this Agreement at the meeting (or any adjournment  thereof) held
for such purpose,  unless in each case the failure of such  occurrence  shall be
due to the failure of the party seeking to terminate  this  Agreement to perform
or observe its  agreements  set forth herein to be performed or observed by such
party (or, in the case of Raritan,  to be performed or observed by the directors
of Raritan) at or before the Effective Time.

                  (c) By United or Raritan upon  written  notice to the other if
any application for regulatory or governmental  approval necessary to consummate
the Merger and the other transactions contemplated hereby shall have been denied
or  withdrawn  at the request or  recommendation  of the  applicable  regulatory
agency or governmental  authority or by United upon written notice to Raritan if
any such  application is approved with conditions  which  materially  impair the
value of Raritan and the Bank, taken as a whole, to United.

                  (d) By United if (i) there  shall  have  occurred  a  material
adverse change in the business,  operations,  assets, or financial  condition of
Raritan or the Bank,  taken as a whole,  from that  disclosed  by Raritan on the
date  of  this   Agreement;   or  (ii)  there  was  a  material  breach  in  any
representation,   warranty,   covenant,   agreement  or  obligation  of  Raritan
hereunder.

                  (e) By Raritan,  if (i) there  shall have  occurred a material
adverse  change in the business,  operations,  assets or financial  condition of
United or UNB from that  disclosed by United on the date of this  Agreement;  or
(ii)  there was a material  breach in any  representation,  warranty,  covenant,
agreement or obligation of United hereunder.

                  (f) By United or Raritan if any condition to Closing specified
under Article VI hereof  applicable to such party cannot reasonably be met on or
before the Cutoff Date after giving the other party a reasonable  opportunity to
cure any such condition.

                  (g) by  Raritan,  if (either  before or after the  approval of
this  Agreement  by the  stockholders  of  Raritan)  its Board of  Directors  so
determines  by a vote of a majority of the members of its entire  Board,  at any
time during the three business day period  commencing  with (and  including) the
Determination Date, if both of the following conditions are satisfied:

                           (x) the Average  Pre-Closing  Price of United  Common
Stock on the Determination Date (the  "Determination  Price"),  is less than the
United  Floor  Price.  The  "United  Floor  Price" is 85% of the United  Average
Starting Date Price.  The "United Average Starting Date Price" is the average of
the high and low sale price of United Common Stock (i.e.,  $26.188) on September
21,  1998 (the  "Starting  Date"),  as the same shall be adjusted to reflect any
Capital Change; and

                           (y)  (i)  the  quotient   obtained  by  dividing  the
Determination  Price by the United  Average  Starting  Date  Price (the  "United
Ratio")  is less  than  (ii)  the  quotient  obtained  by  dividing  the  number
calculated  using the index of  financial  institutions  set forth on  Exhibit B
hereto (the "Index Price") as of the close of business on the Determination Date
by the  Index  Price  as of the  close  of  business  on the  Starting  Date and
subtracting  0.10 from the  quotient in this clause  (y)(ii)  (such number being
referred to herein as the "Index Ratio").

                  Notwithstanding  the foregoing,  if Raritan elects to exercise
its  termination  right  pursuant to this  subsection  (g), it shall give prompt
written notice to United (provided that such notice of election to terminate may
be withdrawn at any time within the aforementioned  three business day period)).
During the two business day period  commencing  with its receipt of such notice,
United shall have the option of increasing the  consideration  to be received by
the holders of Raritan  Common Stock  hereunder by increasing the Exchange Ratio
to equal  the  lesser  of (i) a number  (rounded  to four  decimals)  equal to a
quotient,  the  numerator of which is the United Floor Price  multiplied  by the
Exchange  Ratio  (as  then  in  effect)  and the  denominator  of  which  is the
Determination  Price,  and (ii) a number  (rounded to four decimals)  equal to a
quotient,  the numerator of which is the Index Ratio  multiplied by the Exchange
Ratio (as then in effect) and the  denominator of which is the United Ratio.  If
United makes an election contemplated by the preceding sentence, within such two
business  day  period,  it shall give prompt  written  notice to Raritan of such
election and the revised  Exchange  Ratio,  whereupon no termination  shall have
occurred  pursuant to this  subsection  (g) and this  Agreement  shall remain in
effect in  accordance  with its terms  (except as the Exchange  Ratio shall have
been so  modified),  and any  references in this  Agreement to "Exchange  Ratio"
shall  thereafter be deemed to refer to the Exchange Ratio as adjusted  pursuant
to this subsection (g).

                  7.2.  Effect of  Termination.  In the event of the termination
and  abandonment  of this  Agreement  by either  United or Raritan  pursuant  to
Section 7.1,  this  Agreement  shall  forthwith  become void and have no effect,
without any  liability  on the part of any party or its  officers,  directors or
stockholders,  except that Sections  5.5(b) and 8.1 hereof shall have continuing
effect as set forth therein.  Nothing contained herein,  however,  shall relieve
any party from any liability for any breach of this Agreement.

                  7.3. Amendment. This Agreement may be amended by mutual action
taken by the  parties  hereto  at any time  before  or  after  adoption  of this
Agreement by the  stockholders of Raritan and, if required,  by the shareholders
of United, but, after any such adoption, no amendment shall be made which, under
applicable  New Jersey or Delaware  law,  cannot be made without the approval of
the stockholders of Raritan or the  shareholders of United,  as the case may be,
without obtaining such approval.  This Agreement may not be amended except by an
instrument in writing signed on behalf of United and Raritan.

                  7.4. Extension;  Waiver. The parties may, at any time prior to
the Effective Time of the Merger, (i) extend the time for the performance of any
of the  obligations  or other acts of the other parties  hereto;  (ii) waive any
inaccuracies in the  representations  and warranties  contained herein or in any
document delivered  pursuant thereto;  or (iii) waive compliance with any of the
agreements  or  conditions  contained  herein.  Any agreement on the part of any
party to any such  extension  or waiver  shall be valid  only if set forth in an
instrument in writing signed on behalf of such party against which the waiver is
sought to be enforced.

                                  ARTICLE VIII

                                  MISCELLANEOUS

                  8.1.  Expenses.  All costs and expenses incurred in connection
with this Agreement and the transactions  contemplated  hereby (including legal,
accounting and investment banking fees and expenses) shall be borne by the party
incurring such costs and expenses,  except that the cost of printing and mailing
the Joint  Proxy  Statement/Prospectus  shall be borne  equally  by the  parties
hereto if the transaction is terminated.

                  8.2. Notices.  All notices or other  communications  which are
required or permitted  hereunder shall be in writing and sufficient if delivered
personally  or sent by  telecopier  with  confirming  copy  sent the same day by
registered or certified mail, postage prepaid, as follows:
<PAGE>
                  (a)      If to United, to:

                           United National Bancorp
                           1130 Route 22 East, P.O. Box 6000
                           Bridgewater, New Jersey 08807-0010
                           Attn.:  Thomas C. Gregor, Chairman,
                                    President and Chief Executive Officer

                  With a copy to:

                           Pitney, Hardin, Kipp & Szuch
                           Attn.:  Michael W. Zelenty, Esq.
                           By Hand: 200 Campus Drive
                                            Florham Park, New Jersey 07932-0950
                           By Mail: P.O. Box 1945
                                            Morristown, New Jersey 07962-1945

                  (b)      If to Raritan, to:

                           Raritan Bancorp Inc.
                           454 Route 28
                           Bridgewater, New Jersey 08807
                           Attn.:  Arlyn D. Rus, Chairman,
                                    President and Chief Executive Officer

                  With a copy to:

                           Luse Lehman Gorman Pomerenk & Schick PC
                           5335 Wisconsin Avenue N.W.
                           Washington, D.C. 20015
                           Attn.:  John J. Gorman

                  or such other  addresses  as shall be  furnished in writing by
any party,  and any such notice or  communications  shall be deemed to have been
given as of the date so delivered or telecopied and mailed.

                  8.3. Parties in Interest. This Agreement shall be binding upon
and shall  inure to the  benefit  of the  parties  hereto  and their  respective
successors  and  permitted  assigns.  Nothing in this  Agreement  is intended to
confer,  expressly  or by  implication,  upon any  other  person  any  rights or
remedies  under or by  reason  of this  Agreement,  except  for the  indemnitees
covered by Section 5.14 hereof.  No  assignment  of this  Agreement  may be made
except upon the written consent of the other parties hereto.

                  8.4.  Entire   Agreement.   This  Agreement,   the  Disclosure
Schedules  hereto and the other documents,  agreements and instruments  executed
and delivered  pursuant to or in connection  with this  Agreement,  contains the
entire  agreement  between the parties  hereto with respect to the  transactions
contemplated   by  this  Agreement  and   supersedes  all  prior   negotiations,
arrangements or understandings, written or oral, with respect thereto; provided,
however,  that if this Agreement is terminated,  the terms of Section 5.5(b) and
(c) and the terms of the  Confidentiality  Agreement  between United and Raritan
dated August 19, 1998 shall remain in effect. If any provision of this Agreement
is found  invalid,  it shall be considered  deleted and shall not invalidate the
remaining provisions.

                  8.5.  Counterparts.  This  Agreement may be executed in one or
more  counterparts,  all of which shall be considered one and the same agreement
and each of which shall be deemed an original.

                  8.6.  Governing Law. This  Agreement  shall be governed by the
laws of the State of New Jersey,  without  giving  effect to the  principles  of
conflicts of laws thereof.

                  8.7.  Descriptive  Headings.  The descriptive headings of this
Agreement are for  convenience  only and shall not control or affect the meaning
or construction of any provision of this Agreement.

                  8.8. Survival. All representations,  warranties and, except to
the extent  specifically  provided  otherwise herein,  agreements and covenants,
other than those  agreements and covenants set forth in Section 5.14 which shall
survive the Merger, shall terminate as of the Effective Time.

                  8.9.   Knowledge.   Representations   made  herein  which  are
qualified  by the phrase to the best of Raritan's  knowledge or similar  phrases
refer as of the date hereof to the best knowledge of the Chief Executive Officer
and the Chief  Lending  Officer  of  Raritan  and  thereafter  refer to the best
knowledge  of  any  senior  officer  of  Raritan  or  any  Raritan   subsidiary.
Representations  made herein  which are  qualified  by the phrase to the best of
United's  knowledge or similar  phrases  refer as of the date hereof to the best
knowledge of the Chief Executive Officer, the Executive Vice President/Legal and
the Chief Financial Officer of United and thereafter refer to the best knowledge
of any senior officer of United or any United subsidiary.
<PAGE>
                  IN WITNESS  WHEREOF,  United,  UNB,  the Bank and Raritan have
caused this Agreement to be executed by their duly authorized officers as of the
day and year first above written.

ATTEST:                             UNITED NATIONAL BANCORP


RALPH L. STRAW, JR.                 By: THOMAS C. GREGOR
- -------------------------------        -----------------------------------------
Ralph L. Straw, Jr., Secretary          Thomas C. Gregor, Chairman, President
                                         and Chief Executive Officer


ATTEST:                             RARITAN BANCORP INC.


HELEN J. FRANGELLI                  By:  ARLYN D. RUS
- -------------------------------        -----------------------------------------
Helen J. Frangelli, Secretary            Arlyn D. Rus, Chairman, President
                                          and Chief Executive Officer


ATTEST:                             UNITED NATIONAL BANK


RALPH L. STRAW, JR                  By: THOMAS C. GREGOR
- -------------------------------        -----------------------------------------
Ralph L. Straw, Jr., Cashier            Thomas C. Gregor, Chairman, President
                                         and Chief Executive Officer


ATTEST:                             THE RARITAN SAVINGS BANK


HELEN J. FRANGELLI                  By: ARLYN D. RUS
- -------------------------------        -----------------------------------------
Helen J. Frangelli, Secretary           Arlyn D. Rus, Chairman, President
                                        and Chief Executive Officer



<PAGE>

                         CERTIFICATE OF THE DIRECTORS OF
                            RARITAN BANCORP INC. AND
                            THE RARITAN SAVINGS BANK

                  Reference is made to the Agreement  and Plan of Merger,  dated
as of  September  22, 1998 (the  "Agreement"),  among United  National  Bancorp,
United  National  Bank,  Raritan  Bancorp  Inc.,  and The Raritan  Savings Bank.
Capitalized terms used herein have the meanings given to them in the Agreement.

                  Each of the following  persons,  being all of the directors of
Raritan and the Bank,  agrees to vote or cause to be voted all shares of Raritan
Common Stock which are held by such person,  or over which such person exercises
full  voting  control  (other  than  shares  with  respect to which such  person
exercises  control in a fiduciary  capacity,  as to which no  agreement  is made
hereby), in favor of the Merger

ARLYN D. RUS
- ------------------------

THOMAS F. TANSEY
- ------------------------

PETER S. JOHNSON
- ------------------------

WILLIAM T. KELLENER, JR.
- ------------------------

WILLIAM T. ANDERSON
- ------------------------

WILLIAM W. CROUSE
- ------------------------


- ------------------------


- ------------------------


- ------------------------


- ------------------------



<PAGE>

                                                   Exhibit A to Merger Agreement


                           AGREEMENT TO MERGE BETWEEN
                              UNITED NATIONAL BANK
                                       AND
                            THE RARITAN SAVINGS BANK
                   UNDER THE CHARTER OF UNITED NATIONAL BANK,
                     UNDER THE TITLE OF UNITED NATIONAL BANK


                  THIS AGREEMENT made between United National Bank  (hereinafter
referred to as "UNB"), a national banking  association  organized under the laws
of the United States, being located at 1130 Route 22 East,  Bridgewater,  County
of Somerset in the State of New Jersey,  with a capital of  $__________  divided
into __________ shares of common stock, each of $_____ par value, $__________ of
surplus,  and  undivided  profits of  $__________  as of June 30, 1998,  and The
Raritan Savings Bank (hereinafter  referred to as "Bank"), a federally-chartered
savings bank  organized  under the laws of the United  States,  being located at
____________________,  with a capital of $__________,  divided into _____ shares
of common stock, each of $_____ par value, surplus of $__________, and undivided
profits of $__________ as of June 30, 1998, each acting pursuant to a resolution
of its board of directors,  adopted by the vote of a majority of its  directors,
pursuant to the authority  given by and in accordance with the provisions of the
Act of November  7, 1918,  as amended (12 U.S.C.  Section  215(a)),  and the New
Jersey Banking Act of 1948, as amended, witnesseth as follows:

                  Section 1. Bank shall be merged  into UNB under the charter of
UNB.

                  Section 2. The name of the receiving association  (hereinafter
referred to as the "Surviving Bank") shall be United National Bank.

                  Section 3. The business of the Surviving Bank shall be that of
a  national  banking  association.  This  business  shall  be  conducted  by the
Surviving  Bank at its main office which shall be located at 1130 Route 22 East,
Bridgewater,  Somerset  County,  New  Jersey,  and  at its  legally  established
branches.

                  Section 4. The amount of capital stock of the  Surviving  Bank
shall be $__________,  divided into __________  shares of common stock,  each of
$_____  par  value,  and at the time the  merger  shall  become  effective,  the
Surviving  Bank shall  have a surplus of  $__________,  and  undivided  profits,
including  capital  reserves,  which when  combined with the capital and surplus
will be equal to the combined capital  structures of the merging banks as stated
in the preamble of this  Agreement,  adjusted  however,  for normal earnings and
expenses between June 30, 1998, and the effective time of the merger.

                  Section 5. All assets of each of the  merging  banks,  as they
exist  at the  effective  time of the  merger,  shall  pass  to and  vest in the
Surviving  Bank without any  conveyance or other  transfer.  The Surviving  Bank
shall be responsible for all of the  liabilities of every kind and  description,
including  liabilities  arising  from the  operation of their  respective  trust
departments,  of each of the merging banks  existing as of the effective time of
the  merger.  After the  effective  time of the  merger,  UNB will  continue  to
maintain the Bank liquidation account established by Bank upon its conversion to
the stock form of organization for the benefit of eligible  account holders.  In
addition,  UNB will also  continue  to  maintain  the Bank  liquidation  account
established in conjunction  with the merger and acquisition of Manville  Savings
with,  and  into  the  Bank.  UNB  will  maintain  both  of  the  aforementioned
liquidation  accounts on the same basis as  immediately  prior to the  effective
time of the merger, and Bank's liquidation  accounts for the benefit of eligible
account  holders  shall  automatically  be  deemed  assumed  by  UNB,  as of the
effective  time of the  merger,  on the same basis as they  existed  immediately
prior to the effective time of the merger.

                  Section 6. Bank shall  contribute  to the  Surviving  Bank its
capital  set forth in the  preamble,  adjusted,  however,  for normal  earnings,
expenses and  dividends  between June 30, 1998,  and the  effective  time of the
merger.
         
                  UNB shall have on hand at the effective time of the merger its
capital as set forth in the preamble,  adjusted,  however,  for normal earnings,
expenses  and  dividends  between  June 30, 1998 and the  effective  date of the
merger.

                  Section 7. The  stockholders  of UNB shall retain their rights
in  the  capital  stock  presently  outstanding,  which  shall  immediately  and
automatically  become  __________  shares of common stock of the Surviving Bank,
each with $_____ par value,  and the  stockholders  of Bank in exchange  for the
excess acceptable  assets  contributed by their bank to the Surviving Bank shall
be entitled to receive _____ shares of common stock of the Surviving  Bank, each
with $_____ par value.

                  Section 8.  Neither  of the banks  shall  declare  nor pay any
dividend to its stockholders  between the date of this Agreement and the time at
which the merger shall become effective, nor dispose of any of its assets in any
other manner except in the ordinary  course of business  consistent with prudent
banking practice; provided, however, that UNB shall be entitled to pay dividends
to its  parent  without  restriction  and Bank may pay  dividends  to it  parent
consistent  with past practice,  so long as the payment of such dividends  shall
thereby  not  cause a  breach  of any  representation,  covenant,  agreement  or
condition to which the Bank is subject under the Amended and Restated  Agreement
and Plan of  Merger,  dated as of  September  22,  1998  among  United  National
Bancorp, Raritan Bancorp Inc., UNB and Bank (the "Merger Agreement").

                  Section 9. The present  board of  directors of UNB shall serve
as the board of directors of the Surviving Bank until the next annual meeting or
until such time as their  successors have been elected and have qualified.  [add
two Raritan directors]

                  Section 10.  Effective as of the time this merger shall become
effective as specified in the merger  approval to be issued by the Office of the
Comptroller  of the Currency  (the "OCC"),  the articles of  association  of the
resulting  bank shall read in their  entirety as set forth in Schedule 1 annexed
hereto.

                  Section 11. This Agreement  shall be terminated  automatically
if the Merger Agreement is terminated as provided in the Merger Agreement.

                  Section 12. This Agreement  shall be ratified and confirmed by
the affirmative  vote of the stockholders of each of the merging banks owning at
least  two-thirds of its capital stock  outstanding,  at a meeting to be held on
the call of the  directors;  and the merger shall  become  effective at the time
specified in the merger approval to be issued by the OCC.

                  Section  13.  Each  of  the  representations,  warranties  and
covenants of the parties hereto shall  terminate as of the effective time of the
merger,  other than Section 5 hereof which shall survive the  effective  time of
the merger.

                  Section  14. This  Agreement  may be executed in any number of
counterparts,  and each counterpart shall constitute an original instrument, but
all  such  separate   counterparts  shall  constitute  only  one  and  the  same
instrument.

                  Section 15.  Except as governed by federal law, the  validity,
construction  and  enforceability  of this  Agreement  shall be  governed in all
respects by the laws of the State of New Jersey  without regard to its conflicts
of laws or rules.

                  WITNESS,  the  signatures and seals of the merging banks as of
this  __________,  each set by its president or a vice president and attested to
by its cashier or secretary, pursuant to a resolution of its board of directors,
acting by a majority.



ATTEST:                                         UNITED NATIONAL BANK

_______________________                By:______________________________________


ATTEST:                                         THE RARITAN SAVINGS BANK


________________________               By:______________________________________


<PAGE>


STATE OF NEW JERSEY  )
                      :  ss.
COUNTY OF __________ )


                  On this ____ day of __________, before me, a Notary Public for
this state and county, personally came ____________________,  of UNITED NATIONAL
BANK, and each of his/her capacity  acknowledged  this instrument to the act and
deed of the  association  and the seal affixed to it to be its seal.  WITNESS my
official seal and signature this day and year.

                                                        --------------------
                                                        (Seal of Notary)



STATE OF NEW JERSEY  )
                      :ss.
COUNTY OF ___________)



                  On this _____ day of  __________,  before me, a Notary  Public
for this state and county, personally came ____________________,  of THE RARITAN
SAVINGS BANK, and each of his/her capacity  acknowledged  this instrument to the
act and deed of the association and the seal affixed to it to be its seal.
                  
                  WITNESS my official seal and signature this day and year.

                                                   ----------------------------
                                                        (Seal of Notary)

<PAGE>

                                             Schedule 1 to Bank Merger Agreement

                             ARTICLES OF ASSOCIATION
                                       OF
                              UNITED NATIONAL BANK1


                                      NAME

                  FIRST. The title of the Association  shall be "United National
Bank".

                                   MAIN OFFICE

                  SECOND.  The main office of the  Association  shall be at 1130
Route 22 East, Bridgewater, Somerset County, New Jersey. The general business of
the Association shall be conducted at its legally established branches.

                                    DIRECTORS

                  THIRD.  The  Board  of  Directors  of this  Association  shall
consist  of not less than five nor more than  twenty-five  shareholders.  At any
meeting of the  shareholders  held for the  purpose of  electing  Directors,  or
changing the number  thereof,  the number of Directors  may be  determined  by a
majority of the votes cast by the shareholders in person or by proxy. A majority
of the Board of  Directors  shall be  necessary  to  constitute a quorum for the
transaction of business at any Directors' meeting.

                  The Board of Directors of the  Association may be increased by
two between annual  meetings of  shareholders  and vacancies on the Board may be
filled between  annual  meetings of the  shareholders  by a majority vote of the
full  Board,  but in no event  shall the  number of  Directors  exceed the total
number  of  twenty-five  or such  greater  amount  as may  from  time to time be
permitted by the laws of the United States. Any Director so elected by the Board
must comply with the  provisions  of law with respect to the ownership of shares
of the Association.

                           ANNUAL MEETING OF DIRECTORS

                  FOURTH. The regular annual meeting of the shareholders of this
Association  shall be held at its main  office or other  convenient  place  duly
authorized  by the Board of  Directors  on such day of the year as is  specified
therefor in the By-Laws.

                                     CAPITAL

                  FIFTH.  The  amount  of  authorized   capital  stock  of  this
Association shall be $__________  divided into __________ shares of common stock
of the par value per share of $_____ but said capital  stock may be increased or
decreased from time to time in accordance with the provisions of the laws of the
United States.

                  If the capital  stock is increased  by the sale of  additional
shares  thereof,  each  shareholder  shall be  entitled  to  subscribe  for such
additional  shares in  proportion  to the number of shares of said capital stock
owned by him at the time the increase is authorized by the shareholders,  unless
another time subsequent to the date of the shareholders' meeting is specified in
a resolution adopted by the shareholders at the time the increase is authorized.
The Board of Directors shall have the power to prescribe a reasonable  period of
time  within  which the  preemptive  rights to  subscribe  to the new  shares of
capital stock must be exercised.

                  If the capital  stock is increased by a stock  dividend,  each
shareholder  shall be entitled to his  proportionate  amount of such increase in
accordance  with the number of shares of capital  stock owned by him at the time
the increase is authorized by the  shareholders,  unless another time subsequent
to the date of the shareholders' meeting is specified in a resolution adopted by
the shareholders at the time the increase is authorized.

                                    OFFICERS

                  SIXTH. The Board of Directors shall appoint one of its members
President of this  Association,  who shall be Chairman of the Board,  unless the
Board appoints  another  director to be Chairman.  The Board of Directors  shall
have the  power to  appoint  one or more Vice  Presidents,  at least one of whom
shall be authorized,  in the absence of the  President,  to perform all acts and
duties pertaining to the office of the President;  to appoint a Cashier and such
other officers and employees as may be required to transact the business of this
Association;  to fix the salaries to be paid to such  officers or employees  and
appoint others to take their place.

                  The Board of  Directors  shall  have the  power to define  the
duties of the officers and employees of this Association and to require adequate
bonds  from  them for the  faithful  performance  of their  duties;  to make all
By-Laws  that may be lawful for the general  regulation  of the business of this
Association  and the management of its affairs,  and generally to do and perform
all acts that may be lawful for a Board of Directors to do and perform.

                         CHANGE OF MAIN OFFICE; BRANCHES

                  SEVENTH. The Board of Directors shall have the power to change
the  location of the main office of this  Association  to any other place within
the limits of the State of New Jersey,  without the approval of the shareholders
of this  Association  but  subject to the  approval  of the  Comptroller  of the
Currency;  and shall  have the power to change  the  location  of any  branch or
branches of this Association to any other location,  without the approval of the
shareholders of this  Association but subject to the approval of the Comptroller
of the Currency.

                                    EXISTENCE

                  EIGHTH.  The  corporate  existence of this  Association  shall
continue until terminated in accordance with the laws of the United States.

              SPECIAL MEETINGS OF SHAREHOLDERS; NOTICE OF MEETINGS

                  NINTH.  The Board of  Directors  of this  Association,  or any
three or more shareholders owning, in the aggregate, not less than 10 per centum
(10%)  of the  stock of this  Association,  may call a  special  meeting  of the
shareholders at any time.

                  Unless otherwise  provided by the laws of the United States, a
notice of the time, place and purpose of every regular annual, and every special
meeting of the shareholders shall be given by first class mail, postage prepaid,
mailed at least ten days prior to the date of such  meeting to each  shareholder
of record at his address as shown upon the books of this Association.

                                 INDEMNIFICATION

                  TENTH.  Indemnification  or  reimbursement  may be given to an
officer or  director,  as  authorized  by the Board of  Directors,  for expenses
incurred in any legal action where the officer or director is not adjudged to be
guilty  of  gross  negligence,  willful  misconduct  or  criminal  acts  in  the
performance of his duties to the Association.

                                    AMENDMENT

                  ELEVENTH.  Subject to the provisions of the laws of the United
States,  these  Articles  of  Association  may be amended at any  meeting of the
shareholders  for which adequate notice has been given, by the affirmative  vote
of the owners of a majority of the stock of this  Association,  voting in person
or by proxy.


<PAGE>


                                  EXHIBIT 5.19

                            RARITAN AFFILIATE LETTER

                                                              ___________, 1998

United National Bancorp
1130 Route 22 East, P.O. Box 6000
Bridgewater, New Jersey 08807-0010
Attn.:  Thomas C. Gregor, Chairman,
         President and Chief Executive Officer

Gentlemen:

                  I am  delivering  this  letter to you in  connection  with the
proposed merger (the "Merger") of Raritan  Bancorp Inc., a Delaware  corporation
(the "Company") with and into United National Bancorp,  a New Jersey corporation
("United"),  pursuant to the Amended and Restated  Agreement  and Plan of Merger
dated as of September 22, 1998 (the "Agreement") among the Company,  United, The
Raritan  Savings Bank and United  National  Bank. I currently  own shares of the
Company's common stock, par value $.01 per share ("Raritan Common Stock").  As a
result of the Merger, I will receive shares of United's common stock,  $1.25 par
value  ("United  Common  Stock") in exchange  for my Raritan  Common  Stock.  In
addition,  to the extent I own options to acquire  Raritan  Common Stock,  those
options will be  converted in the Merger into United  Common Stock or options to
acquire United Common Stock.

                  I have been  advised  that as of the date of this letter I may
be  deemed to be an  "affiliate"  of the  Company,  as the term  "affiliate"  is
defined  for  purposes  of  paragraphs  (c) and (d) of Rule 145 of the rules and
regulations promulgated under the Securities Act of 1933, as amended (the "Act")
by the Securities and Exchange  Commission  (the  "Commission")  and as the term
"affiliate"  is used for  purposes  of the  Commission's  rules and  regulations
applicable  to the  determination  of whether a merger can be accounted for as a
"pooling of  interests"  as  specified  in the  Commission's  Accounting  Series
Release  135,  as amended by Staff  Accounting  Bulletins  Nos.  65 and 76 ("ASR
135").

                  I represent to and covenant with United that:

                  A. Initial Transfer Restrictions Prior to Merger Consummation.
During the period  beginning  on the date hereof and ending 30 days prior to the
consummation of the Merger, I shall not sell,  transfer or otherwise  dispose of
("transfer")  any Raritan  Common  Stock owned by me, and I shall not permit any
relative  who  shares my home,  or any  person or entity who or which I control,
from  transferring  any  Raritan  Common  Stock  owned by such person or entity,
without notifying United in advance of the proposed transfer and giving United a
reasonable  opportunity  to object  to the  transfer  before it is  consummated.
United, upon advice of its independent public  accountants,  may instruct me not
to make or permit the  transfer  because it may  interfere  with the "pooling of
interests" treatment of the Merger. I shall abide by any such instructions.

                  B.   Later   Pre-Merger   and    Post-Consummation    Transfer
Restrictions.  During the period  beginning 30 days prior to the consummation of
the Merger and ending  immediately  after financial results covering at least 30
days of post-Merger  combined  operations have been published by United by means
of the filing of a Form 10-Q or Form 8-K under the  Securities  Exchange  Act of
1934,  as amended,  the issuance of a quarterly  earnings  report,  or any other
public  issuance  which  satisfies  the  requirements  of ASR 135,  I shall  not
transfer  any  Raritan  Common  Stock  owned by me,  and I shall not  permit any
relative who shares my home, or any person or entity who or which I control,  to
transfer any Raritan  Common Stock owned by such person or entity.  For purposes
of this paragraph,  "Raritan Common Stock" includes the United Common Stock into
which the Raritan Common Stock or Options is converted.

                  C. Need for  Registration  or  Exemption  in  Connection  with
Transfers.  I have been advised  that the issuance of United  Common Stock to me
pursuant to the Merger will be registered with the Commission under the Act on a
Registration  Statement on Form S-4.  However,  I have also been  advised  that,
since I may be deemed to be an  affiliate  of the Company at the time the Merger
is submitted  for a vote of the  Company's  stockholders,  any transfer by me of
United Common Stock  received by me in the Merger is  restricted  under Rule 145
promulgated  by the Commission  under the Act. I may not transfer  United Common
Stock  received by me or by any  relative who shares my home or by any person or
entity who or which I control,  unless (i) such transfer is registered under the
Act,  (ii)  such  transfer  is made in  conformity  with the  volume  and  other
limitations of Rule 145 promulgated by the Commission under the Act, or (iii) in
the  opinion of  counsel  reasonably  acceptable  to United,  such  transfer  is
otherwise exempt from registration under the Act.

                  D. Stop Transfer Instructions;  Legend on Certificates. I also
understand that stop transfer  instructions  will be given to United's  transfer
agents with respect to the United  Common Stock and that there will be placed on
the  certificates of the United Common Stock issued to me or to any relative who
shares  my home or to any  person  or  entity  who or  which I  control,  or any
substitutions therefor, a legend stating in substance:

         "THE  SHARES   REPRESENTED  BY  THIS   CERTIFICATE  WERE  ISSUED  IN  A
TRANSACTION  TO WHICH  RULE 145  PROMULGATED  UNDER THE  SECURITIES  ACT OF 1933
APPLIES.  THE SHARES  REPRESENTED BY THIS CERTIFICATE MAY ONLY BE TRANSFERRED IN
ACCORDANCE  WITH THE TERMS OF AN AGREEMENT  DATED SEPTEMBER 22, 1998 BETWEEN THE
REGISTERED HOLDER HEREOF AND UNITED NATIONAL BANCORP,  A COPY OF WHICH AGREEMENT
IS ON FILE AT THE PRINCIPAL OFFICE OF UNITED NATIONAL BANCORP."

                  E.  Consultation  with  Counsel.  I have  carefully  read this
letter and the Agreement and discussed the  requirements  of such  documents and
other applicable  limitations upon my ability to transfer United Common Stock to
the extent I felt necessary with my counsel or counsel for the Company.

                  Execution of this letter is not an admission on my part that I
am an  "affiliate"  of the Company as described in the second  paragraph of this
letter,  or a waiver of any  rights I may have to object to any claim  that I am
such an  affiliate  on or  after  the date of this  letter.  This  letter  shall
terminate  concurrently with any termination of the Agreement in accordance with
its terms.

                                                  Very truly yours,


                                                  Name:
Accepted this ____ day of
_______________, 1998 by

UNITED NATIONAL BANCORP

By:
    Name:
    Title:


<PAGE>


                                 EXHIBIT 5.19.1
                             UNITED AFFILIATE LETTER

                                                          ____________, 1998

United National Bancorp
1130 Route 22 East, P.O. Box 6000
Bridgewater, New Jersey 08807-0010
Attn.:  Thomas C. Gregor, Chairman,
         President and Chief Executive Officer

Gentlemen:

                  I am  delivering  this  letter to you in  connection  with the
proposed merger (the "Merger") of Raritan  Bancorp Inc., a Delaware  corporation
("Raritan")  with and into United  National  Bancorp,  a New Jersey  corporation
("United"),  pursuant to the Amended and Restated  Agreement  and Plan of Merger
dated as of September 22, 1998 (the "Agreement") among United,  Raritan,  United
National  Bank and The Raritan  Savings Bank. I currently own shares of United's
common stock, $1.25 par value ("United Common Stock").

                  I have been  advised  that as of the date of this letter I may
be deemed to be an  "affiliate" of United,  as the term  "affiliate" is used for
purposes of the rules and regulations of the Securities and Exchange  Commission
(the  "Commission")  applicable to the  determination of whether a merger can be
accounted  for as a "pooling of  interests"  as  specified  in the  Commission's
Accounting Series Release 135, as amended by Staff Accounting  Bulletins Nos. 65
and 76 ("ASR 135").

                  I represent and covenant with United and Raritan that:

                  A. Initial Transfer Restrictions Prior to Merger Consummation.
During the period  beginning  on the date hereof and ending 30 days prior to the
consummation of the Merger, I shall not sell,  transfer or otherwise  dispose of
("transfer")  any United  Common  Stock  owned by me, and I shall not permit any
relative  who  shares my home,  or any  person or entity who or which I control,
from  transferring  any  United  Common  Stock  owned by such  person or entity,
without notifying United in advance of the proposed transfer and giving United a
reasonable  opportunity  to object  to the  transfer  before it is  consummated.
United, upon advice of its independent public  accountants,  may instruct me not
to make or permit the  transfer  because it may  interfere  with the "pooling of
interests" treatment of the Merger. I shall abide by any such instructions.

                  B.   Later   Pre-Merger   and    Post-Consummation    Transfer
Restrictions.  During the period  beginning 30 days prior to the consummation of
the Merger and ending  immediately  after financial results covering at least 30
days of post-Merger  combined  operations have been published by United by means
of filing of a Form 10-Q or Form 8-K under the Securities  Exchange Act of 1934,
the issuance of a quarterly  earnings report, or any other public issuance which
satisfies  the  requirements  of ASR 135, I shall not transfer any United Common
Stock owned by me, and I shall not permit any  relative  who shares my home,  or
any person or entity who or which I control, to transfer any United Common Stock
owned by such person or entity.

                  C.  Consultation  with  Counsel.  I have  carefully  read this
letter and the Agreement and discussed the  requirements  of such  documents and
other applicable  limitations upon my ability to transfer United Common Stock to
the extent I felt necessary with my counsel or counsel for United.



<PAGE>


                  Execution of this letter is not an admission on my part that I
am an "affiliate" of United as described in the second paragraph of this letter,
or a waiver of any  rights I may have to  object to any claim  that I am such an
affiliate  on or after the date of this  letter.  This  letter  shall  terminate
concurrently with any termination of the Agreement in accordance with its terms.

                                                  Very truly yours,


                                                  Name:_________________________

Accepted this ___ day of
____________, 1998 by

UNITED NATIONAL BANCORP

By: ___________________________
     Name:
     Title:


<PAGE>




                                  SCHEDULE 6.2

                         FORM OF OPINION OF COUNSELS TO
                           RARITAN TO BE DELIVERED TO
                          UNITED AT THE EFFECTIVE TIME

   (Capitalized terms used herein and not otherwise defined have the meanings
                          given them in the Agreement)


                  (a)  Raritan is a  corporation  validly  existing  and in good
standing  under the laws of the State of  Delaware.  Raritan  has the  corporate
power and  authority  to own or lease all of its  properties  and  assets and to
carry on its business as described  in the Joint Proxy  Statement/Prospectus  on
page __ under the caption _________________.  Raritan is registered as a holding
company under the BHCA.

                  (b) Each  Subsidiary of Raritan  listed as such in the Raritan
Disclosure  Schedule is validly  existing and in good standing under the laws of
the jurisdiction of its incorporation.  The Bank is a New Jersey-chartered stock
savings bank. The Bank has the corporate power and authority to own or lease all
of its  properties  and assets and to carry on its  business as described in the
Joint Proxy Statement/Prospectus on page __ under the caption _________________.

                  (c) The  authorized  capital  stock  of  Raritan  consists  of
__________  shares of  Raritan  Common  Stock and  _________  shares of  Raritan
Preferred  Stock.  Except for any Raritan Common Stock issuable upon exercise of
outstanding Raritan Options granted pursuant to the Raritan Option Plans and the
United Stock Option,  we have not become aware  (through our  representation  of
Raritan  in  connection  therewith  or in the  course of our  representation  of
Raritan in connection with the Agreement,  or through Raritan's  representations
to us in the  attached  certificate)  of any  outstanding  subscription  rights,
options,  conversion rights,  warrants or other agreements or commitments of any
nature  whatsoever  (either firm or  conditional)  obligating  Raritan to issue,
deliver or sell, cause to be issued,  delivered or sold, or restricting  Raritan
from selling any Raritan Preferred Stock or any additional  Raritan Common Stock
or  obligating  Raritan  to grant,  extend or enter into any such  agreement  or
commitment.  Based solely upon our review of the minute books of Raritan and its
Subsidiaries,  and  without  independent  verification  of the  matters  recited
therein,  all of the  outstanding  shares of capital stock of each Subsidiary of
Raritan  listed as such in the Raritan  Disclosure  Schedule  have been  validly
authorized  and  issued  and we are not aware of any  liens,  claims,  equities,
restrictions or encumbrances created by Raritan on Raritan's ownership thereof.

                  (d) The Agreement has been authorized,  executed and delivered
by Raritan and the Bank and  constitutes  the valid and binding  obligations  of
Raritan and the Bank,  respectively,  enforceable in accordance  with its terms,
except that the enforceability of the obligations of Raritan and the Bank may be
limited  by  bankruptcy,  fraudulent  conveyance,  insolvency,   reorganization,
moratorium,  or laws  affecting bank holding  companies or New  Jersey-chartered
stock  savings  banks or  institutions  the deposits of which are insured by the
FDIC or other laws heretofore or hereafter  enacted relating to or affecting the
enforcement  of  creditors'   rights  generally  and  by  principles  of  equity
(regardless  of whether such  enforceability  is  considered  in a proceeding in
equity or at law).  In addition,  certain  remedial and other  provisions of the
Agreement may be limited by implied covenants of good faith,  fair dealing,  and
commercially  reasonable  conduct,  by judicial  discretion,  in the instance of
equitable remedies, and by applicable public policies and laws.

                  (e) The  execution  and delivery of the Agreement and the Bank
Merger Agreement and the consummation of the transactions  contemplated  thereby
will not (i) conflict  with or violate any  provision of or result in the breach
of any provision of the respective  certificate of incorporation or charter,  as
the case may be, or  by-laws  of  Raritan  or the Bank;  (ii)  conflict  with or
violate in any material respect,  or result in a material breach or violation of
the terms or provisions of, or constitute a default under, or result in (whether
upon or after  the  giving  of  notice  or lapse of time or both)  any  material
obligation  under, any indenture,  mortgage,  deed of trust or loan agreement or
any other agreement, instrument, judgment, order, arbitration award or decree of
which  we are  aware  (through  our  representation  of  Raritan  in  connection
therewith or in the course of our  representation  of Raritan in connection with
the  Agreement,  or  through  Raritan's  representations  to us in the  attached
certificate)  and to which Raritan or the Bank is a party or by which Raritan or
the Bank is bound;  or (iii) cause  Raritan or the Bank to violate any law, rule
or regulation applicable to Raritan or the Bank: except with respect to (ii) and
(iii) above, such as in the aggregate will not have a material adverse effect on
the ability of Raritan and the Bank to consummate the transactions  contemplated
by the Agreement.

                  (f) All actions of the directors and  stockholders  of Raritan
and of the Bank  required  by federal  banking  law or  Delaware  law, or by the
respective  certificate  of  incorporation  or  charter,  as the case may be, or
by-laws of Raritan or the Bank,  to be taken by Raritan or the Bank to authorize
the execution, delivery and performance of the Agreement and consummation of the
Merger have been taken.

                  (g) No approvals, authorizations, consents or other actions or
filings under federal banking law or Delaware law  ("Approvals") are required to
be obtained by Raritan or the Bank in order to permit the execution and delivery
of the Agreement by Raritan and the Bank and the  performance by Raritan and the
Bank of the transactions  contemplated  thereby other than those Approvals which
have been  obtained or those  Approvals  or consents  required to be obtained by
United or UNB, or Approvals not required or necessary to be obtained on the date
hereof.

                  (h) Except as set forth in the Raritan Disclosure Schedule and
in Raritan's  certificate  addressed to us and attached  hereto,  and other than
ordinary  routine  litigation  incidental  to the  business  of  Raritan  or its
Subsidiaries,  we are not aware of any material  action,  suit or  proceeding or
investigation  pending  or  threatened  in  writing  against  or  affecting  the
business,  operations,  property or financial condition of Raritan or any of its
Subsidiaries,  at law or in equity,  in any court or before any Federal,  state,
municipal or other governmental department, commission, board, bureau, agency or
instrumentality,  except those which, if decided  adversely to Raritan or any of
its  Subsidiaries,  would not have a material  adverse effect on Raritan and its
Subsidiaries, taken as a whole; provided, however, we are not counsel to Raritan
or its  Subsidiaries  in any  litigation  and with respect to  litigation we are
relying upon the  representation  and warranty of Raritan made in Section 3.7 of
the Agreement with respect to material  litigation and on Raritan's  certificate
addressed to us and attached hereto.



                                     *******


                  We are not passing  upon and do not assume any  responsibility
for the accuracy,  completeness  or fairness of the statements  and  information
contained  in the Joint Proxy  Statement/Prospectus  and make no  representation
that we have  independently  verified the accuracy,  completeness or fairness of
such statements and information, but, without in any way limiting the generality
of the foregoing,  based upon our review of the Joint Proxy Statement/Prospectus
(i) the Joint Proxy  Statement/Prospectus  (except for financial  statements and
other tabular  financial  information,  and other financial and statistical data
and information,  as to which we express no opinion)  complies as to form in all
material  respects  with the 1934 Act and the  applicable  laws and  regulations
thereunder,  (ii) no facts have come to our attention  that caused us to believe
that (except for financial  statements and other tabular financial  information,
as to which we do not express  any belief) the Joint Proxy  Statement/Prospectus
on  the  date  of  the  mailing  thereof  and on the  date  of  the  meeting  of
stockholders  of Raritan at which the  Agreement  was  approved,  contained  any
untrue  statement of a material fact with respect to Raritan or omitted to state
a  material  fact  with  respect  to  Raritan  necessary  in  order  to make the
statements therein with respect to Raritan,  in light of the circumstances under
which they were made, not misleading.


                                     *******

                  In rendering their opinion, counsel to Raritan (A) may, to the
extent they deem proper and so specify in their  opinion,  rely upon the opinion
of  other  counsel  as to  matters  involving  the  application  of  laws of any
jurisdiction other than the United States, or may exclude from their opinion the
substance  included in the opinions of other counsel  given  directly to Raritan
and (B) may rely, as to matters of fact, on certificates of responsible officers
of Raritan,  the Bank, or other  Subsidiaries  of Raritan and public  officials;
provided  copies of any such opinions or  certificates  are delivered to Raritan
together  with the  opinion to be  rendered  hereunder  by  counsel to  Raritan.
Counsel  to Raritan  may  assume  that any  agreement  is the valid and  binding
obligation of any parties to such agreement  other than Raritan and the Bank. As
to matters of fact,  counsel to Raritan  may also rely upon the  representations
and  warranties  made by  Raritan to Raritan  in the  Agreement  as though  such
representations and warranties were made directly to counsel. Counsel to Raritan
may also rely upon the genuineness of signatures and the authenticity of copies.


<PAGE>
                                  SCHEDULE 6.3

                          FORM OF OPINION OF COUNSEL TO
                            UNITED TO BE DELIVERED TO
                          RARITAN AT THE EFFECTIVE TIME

   (Capitalized terms used herein and not otherwise defined have the meanings
                          given them in the Agreement)

                  (a)  United  is a  corporation  validly  existing  and in good
standing  under the laws of the State of New  Jersey.  United has the  corporate
power and  authority  to own or lease all of its  properties  and  assets and to
carry on its business as described  in the Joint Proxy  Statement/Prospectus  on
page __ under the  caption  _________________.  United is  registered  as a bank
holding company under the BHCA.

                  (b) Each  Subsidiary  of United  listed as such in the  United
Disclosure  Schedule is validly  existing and in good standing under the laws of
the jurisdiction of its  incorporation.  UNB is a national  banking  association
chartered  under the laws of the United States.  UNB has the corporate power and
authority to own or lease all of its  properties  and assets and to carry on its
business as described in the Joint Proxy  Statement/Prospectus  on page __ under
the caption _________________.

                  (c)  The  authorized  capital  stock  of  United  consists  of
___________  shares of common  stock,  ___ par value per share  ("United  Common
Stock").   Except  for  any  United  Common  Stock  issuable  upon  exercise  of
outstanding stock options and stock appreciation  rights granted pursuant to the
United  Option Plan,  we have not become aware  (through our  representation  of
United in connection  therewith or in the course of our representation of United
in connection with the Agreement,  or through United's  representations to us in
the attached  certificate)  of any  outstanding  subscription  rights,  options,
conversion  rights,  warrants or other  agreements or  commitments of any nature
whatsoever (either firm or conditional)  obligating United to issue,  deliver or
sell, cause to be issued,  delivered or sold, or restricting United from selling
any  additional  United  Common Stock or obligating  United to grant,  extend or
enter into any such  agreement  or  commitment  except as may be provided in any
acquisition  agreement  United may enter into after the date of execution of the
Agreement.  Based  solely upon our review of the minute  books of United and its
Subsidiaries,  and  without  independent  verification  of the  matters  recited
therein,  all of the  outstanding  shares of capital stock of each Subsidiary of
United  listed as such in the  United  Disclosure  Schedule  have  been  validly
authorized  and  issued  and we are not aware of any  liens,  claims,  equities,
restrictions or encumbrances  created by United on United's  ownership  thereof.
The United Common Stock to be issued in connection with the Merger in accordance
with Article II of the Agreement,  when so issued in accordance therewith,  will
be duly  authorized,  validly  issued,  fully paid and  non-assessable,  free of
preemptive rights and free and clear of all liens,  encumbrances or restrictions
created by United.

                  (d) The Agreement has been authorized,  executed and delivered
by United and UNB and  constitutes  the valid and binding  obligations of United
and UNB, respectively, enforceable in accordance with its terms, except that the
enforceability  of  the  obligations  of  United  and  UNB  may  be  limited  by
bankruptcy, fraudulent conveyance,  insolvency,  reorganization,  moratorium, or
laws  affecting  institutions  the  deposits of which are insured by the FDIC or
other  laws  heretofore  or  hereafter  enacted  relating  to or  affecting  the
enforcement  of  creditors'   rights  generally  and  by  principles  of  equity
(regardless  of whether such  enforceability  is  considered  in a proceeding in
equity or at law).  In addition,  certain  remedial and other  provisions of the
Agreement may be limited by implied covenants of good faith,  fair dealing,  and
commercially  reasonable  conduct,  by judicial  discretion,  in the instance of
equitable remedies, and by applicable public policies and laws.

                  (e) The  execution  and delivery of the Agreement and the Bank
Merger Agreement and the consummation of the transactions  contemplated  thereby
will not (i) conflict  with or violate any  provision of or result in the breach
of any provision of the respective  certificates of  incorporation or by-laws of
United or UNB; (ii) conflict with or violate in any material respect,  or result
in a material breach or violation of the terms or provisions of, or constitute a
default under, or result in (whether upon or after the giving of notice or lapse
of time or both) any material obligation under, any indenture, mortgage, deed of
trust or loan agreement or any other  agreement,  instrument,  judgment,  order,
arbitration award or decree of which we are aware (through our representation of
United in connection  therewith or in the course of our representation of United
in connection with the Agreement,  or through United's  representations to us in
the  attached  certificate)  and to which  United  or UNB is a party or by which
United or UNB is bound; or (iii) cause United or UNB to violate any law, rule or
regulation  applicable  to United or UNB:  except with respect to (ii) and (iii)
above,  such as in the aggregate will not have a material  adverse effect on the
ability of United and UNB to consummate  the  transactions  contemplated  by the
Agreement.

                  (f) All actions of the  directors and  stockholders  of United
and of UNB  required  by  federal  banking  law or  New  Jersey  law,  or by the
respective  certificates  of  incorporation  or by-laws of United or UNB,  to be
taken by United or UNB to authorize the execution,  delivery and  performance of
the Agreement and consummation of the Merger have been taken.

                  (g)  Assuming  that  there has been due  authorization  of the
Merger by all necessary  corporate and  governmental  proceedings on the part of
Raritan and that  Raritan has taken all action  required to be taken by it prior
to the Effective Time, upon the appropriate filing of the Certificates of Merger
in respect of the Merger with the New Jersey Secretary of State and the Delaware
Secretary of State in accordance  with Section 1.6 of the Agreement,  the Merger
will become effective at the time of such filing,  and upon effectiveness of the
Merger  each share of Raritan  Common  Stock will be  converted  as  provided in
Article II of the Agreement.

                  (h) No approvals, authorizations, consents or other actions or
filings under federal banking law or New Jersey law  ("Approvals")  are required
to be obtained by United or UNB in order to permit the execution and delivery of
the  Agreement  by United and UNB and the  performance  by United and UNB of the
transactions  contemplated  thereby other than those  Approvals  which have been
obtained or those  Approvals  or consents  required to be obtained by Raritan or
the Bank,  and  Approvals  not  required or necessary to be obtained on the date
hereof.

                  (i) Except as set forth in the United Disclosure  Schedule and
in United's  certificate  addressed  to us and attached  hereto,  and other than
ordinary  routine  litigation  incidental  to  the  business  of  United  or its
Subsidiaries,  we are not aware of any material  action,  suit or  proceeding or
investigation  pending  or  threatened  in  writing  against  or  affecting  the
business,  operations,  property or financial  condition of United or any of its
Subsidiaries,  at law or in equity,  in any court or before any Federal,  state,
municipal or other governmental department, commission, board, bureau, agency or
instrumentality,  except those which,  if decided  adversely to United or any of
its  Subsidiaries,  would not have a material  adverse  effect on United and its
Subsidiaries,  taken as a whole; provided, however, we are not counsel to United
or its  Subsidiaries  in  certain  litigation  and  with  respect  to  any  such
litigation we are relying upon the representation and warranty of United made in
Section  4.10 of the  Agreement  with  respect  to  material  litigation  and on
United's certificate addressed to us and attached hereto.

                  (j) The Registration  Statement has been declared effective by
the SEC under the 1933 Act and we are not aware that any stop  order  suspending
the  effectiveness  has been issued under the 1933 Act or  proceedings  therefor
initiated or threatened by the SEC.

                                     *******

                  We are not passing  upon and do not assume any  responsibility
for the accuracy,  completeness  or fairness of the statements  and  information
contained  in the Joint Proxy  Statement/Prospectus  and make no  representation
that we have  independently  verified the accuracy,  completeness or fairness of
such statements and information, but, without in any way limiting the generality
of the foregoing,  based upon our review of the Joint Proxy Statement/Prospectus
(i) the Joint Proxy  Statement/Prospectus  (except for financial  statements and
other tabular  financial  information,  and other financial and statistical data
and information,  as to which we express no opinion)  complies as to form in all
material  respects  with the 1933 Act and the  applicable  laws and  regulations
thereunder,  (ii) no facts have come to our attention  that caused us to believe
that (except for financial  statements and other tabular financial  information,
as to which we do not express  any belief) the Joint Proxy  Statement/Prospectus
on  the  date  of  the  mailing  thereof  and on the  date  of  the  meeting  of
stockholders  of Raritan at which the  Agreement  was  approved,  contained  any
untrue statement of a material fact with respect to United or omitted to state a
material fact with respect to United  necessary in order to make the  statements
therein with respect to United, in light of the  circumstances  under which they
were made, not misleading.

                                     *******

                  In rendering their opinion,  counsel to United (A) may, to the
extent they deem proper and so specify in their  opinion,  rely upon the opinion
of  other  counsel  as to  matters  involving  the  application  of  laws of any
jurisdiction  other than the United  States or the State of New  Jersey,  or may
exclude  from their  opinion the  substance  included  in the  opinions of other
counsel  given  directly to Raritan and (B) may rely,  as to matters of fact, on
certificates of responsible  officers of United,  UNB, or other  Subsidiaries of
United  and  public   officials;   provided  copies  of  any  such  opinions  or
certificates  are delivered to Raritan  together with the opinion to be rendered
hereunder by counsel to United.  Counsel to United may assume that any agreement
is the valid and binding  obligation of any parties to such agreement other than
United.  As to  matters  of fact,  counsel  to  United  may also  rely  upon the
representations  and  warranties  made by United to Raritan in the  Agreement as
though  such  representations  and  warranties  were made  directly  to counsel.
Counsel  to United  may also rely upon the  genuineness  of  signatures  and the
authenticity of copies.
<PAGE>


<TABLE>

                                                                                                   Exhibit B to
                                                                                                   Merger Agreement

                                      Index

                                                                                                          Index
                                                                                                         Weighting
    Company Name                                   Ticker           City                   State           (%)
    <S>                                            <C>             <C>                     <C>                <C> 
    Commerce Bancorp, Inc.                         CBH             Cherry Hill             NJ                 10.95
    S&T Bancorp, Inc.                              STBA            Indiana                 PA                  8.50
    TrustCo Bank Corp NY                           TRST            Schenectady             NY                  8.28
    Provident Bankshares  Corporation              PBKS            Baltimore               MD                  7.80
    UST Corporation                                USTB            Boston                  MA                  7.75
    F&M National Corporation                       FMN             Winchester              VA                  7.43
    First Commonwealth Financial  Corporation
                                                   FCF             Indiana                 PA                  6.97
    Trust Company of New Jersey  (The)             TCNJ            Jersey City             NJ                  5.67
    National Penn Bancshares, Inc.                 NPBC            Boyertown               PA                  4.10
    BT Financial Corporation                       BTFC            Johnstown               PA                  3.82
    USBANCORP, Inc.                                UBAN            Johnstown               PA                  3.55
    Sandy Spring Bancorp                           SASR            Olney                   MD                  3.54
    NBT Bancorp, Inc.                              NBTB            Norwich                 NY                  3.28
    First Western Bancorp, Inc.                    FWBI            New Castle              PA                  3.25
    Harleysville National Corporation              HNBC            Harleysville            PA                  3.16
    BSB Bancorp, Inc.                              BSBN            Binghamton              NY                  3.07
    F&M Bancorp                                    FMBN            Frederick               MD                  2.68
    Community Bank System, Inc.                    CBU             DeWitt                  NY                  2.51
    Arrow Financial Corporation                    AROW            Glen Falls              NY                  2.04
    Sun Bancorp, Inc.                              SNBC            Vineland                NJ                  1.66

</TABLE>


If, at any time after September 21, 1998 and before the Determination  Date, the
common  stock of any company on this  Exhibit B ceases to be publicly  traded or
any public  announcement  of a proposal  for such  company to be acquired or for
such company to acquire  another  company or companies  in  transactions  with a
value exceeding 25% of the acquiror's market capitalization,  such company shall
be removed from the Index Group  effective as of the Starting  Date (i.e.,  such
Company  shall not be  considered  part of the Index  Group for any  purposes in
connection with this Merger  Agreement) and the Index Weighting of the remaining
companies in the Index Group shall be increased  proportionately  to their prior
Index  Weighting,  so that the total  Index  Weighting  is 100%.  If any company
belonging   to  the  Index  Group   declares   or  effects  a  stock   dividend,
reclassification,  recapitalization,  split-up, combination, exchange of shares,
or similar transaction between the Starting Date and the Determination Date, the
prices for the common stock of such company shall be appropriately  adjusted for
the purposes of applying this Exhibit B.


<PAGE>


                                                                       EXHIBIT B
                             STOCK OPTION AGREEMENT


                         THIS STOCK OPTION  AGREEMENT (this  "Agreement")  dated
September  22, 1998, is by and between  United  National  Bancorp,  a New Jersey
corporation and registered bank holding company ("United"),  and Raritan Bancorp
Inc., a Delaware corporation
("Raritan").

                                   BACKGROUND

                  1.  United,  United  National  Bank  ("UNB"),  Raritan and The
Raritan  Savings  Bank (the  "Bank"),  as of the date  hereof,  have  executed a
definitive  agreement  and plan of merger (the "Merger  Agreement")  pursuant to
which  United will  acquire  Raritan  through a merger of Raritan  with and into
United (the "Merger").

                  2. During the negotiation of the Merger Agreement,  United and
UNB advised  Raritan  that they would not execute  the Merger  Agreement  unless
Raritan executed this Agreement.

                  3. As an  inducement  to  United  to  enter  into  the  Merger
Agreement and in  consideration  for such entry,  Raritan has agreed to grant to
United an option to purchase  authorized but unissued  shares of common stock of
Raritan in an amount and on the terms and conditions hereinafter set forth.

                                    AGREEMENT

                  In consideration of the foregoing and the mutual covenants and
agreements  set forth  herein and in the Merger  Agreement,  United and Raritan,
intending to be legally bound hereby, agree:

                  1. Grant of Option. Raritan hereby grants to United the option
to purchase  470,000  shares of the common  stock,  $.01 par value (the  "Common
Stock"),  of Raritan at a price of $26.00 per share (the "Option Price"), on the
terms and conditions set forth herein (the "Option").

                  2.  Exercise of Option.  This Option shall not be  exercisable
until  the  occurrence  of a  Triggering  Event  (as  such  term is  hereinafter
defined).  Upon or after the  occurrence of a Triggering  Event (as such term is
hereinafter  defined),  United may exercise the Option,  in whole or in part, at
any time or from time to time, subject to the termination  provisions of Section
19 of this Agreement.

                  The term "Triggering Event" means the occurrence of any of the
following events:

                  A person or group (as such terms are defined in the Securities
Exchange  Act of 1934,  as  amended  (the  "Exchange  Act"),  and the  rules and
regulations thereunder) other than United or an affiliate of United:

                  a. acquires  beneficial  ownership (as such term is defined in
Rule 13d-3 as  promulgated  under the Exchange  Act) of at least 20% of the then
outstanding shares of Common Stock;

                  b.  enters  into a letter of intent or an  agreement,  whether
oral or written,  with Raritan pursuant to which such person or any affiliate of
such  person  would  (i)  merge  or  consolidate,  or  enter  into  any  similar
transaction, with Raritan or the Bank, (ii) acquire all or a significant portion
of the assets or liabilities of Raritan or the Bank, or (iii) acquire beneficial
ownership  of  securities  representing,  or the  right  to  acquire  beneficial
ownership or to vote securities representing 20% or more of the then outstanding
shares of Common Stock;

                  c. makes a filing with any bank or thrift regulatory authority
or publicly  announces a bona fide proposal (a  "Proposal")  for (i) any merger,
consolidation  or acquisition of all or a significant  portion of all the assets
or  liabilities  of  Raritan  or the  Bank  or any  other  business  combination
involving  Raritan or the Bank, or (ii) a transaction  involving the transfer of
beneficial  ownership  of  securities  representing,  or the  right  to  acquire
beneficial  ownership  or to vote  securities  representing,  20% or more of the
outstanding  shares of Common Stock,  and  thereafter,  if such Proposal has not
been Publicly  Withdrawn (as such term is hereinafter  defined) at least 15 days
prior to the meeting of stockholders of Raritan called to vote on the Merger and
Raritan'  stockholders  fail to  approve  the  Merger  by the vote  required  by
applicable law at the meeting of stockholders called for such purpose; or

                  d. makes a bona fide Proposal and thereafter,  but before such
Proposal has been Publicly Withdrawn,  Raritan willfully takes any action in any
manner  which would  materially  interfere  with its ability to  consummate  the
Merger or materially reduce the value of the transaction to United.

                  The term  "Triggering  Event"  also  means  the  taking of any
material direct or indirect action by Raritan or any of its directors,  officers
or agents,  with the formal or informal  approval or acquiescence of the Raritan
Board of Directors,  with the intention of inviting,  encouraging  or soliciting
any  proposal  which has as its purpose a tender  offer for the shares of Common
Stock,  a  merger,  consolidation,  plan of  exchange,  plan of  acquisition  or
reorganization of Raritan, or a sale of a significant number of shares of Common
Stock or any significant portion of its assets or liabilities.

                  The term  "significant  portion"  means  25% of the  assets or
liabilities  of  Raritan.  The  term  "significant  number"  means  20%  of  the
outstanding shares of Raritan.

                  "Publicly  Withdrawn",  for  purposes  of clauses  (c) and (d)
above,  shall mean an unconditional bona fide withdrawal of the Proposal coupled
with a public  announcement of no further  interest in pursuing such Proposal or
in acquiring any controlling influence over Raritan or the Bank or in soliciting
or inducing any other person (other than United or any affiliate) to do so.

                  Notwithstanding the foregoing, the Option may not be exercised
at any  time (i) in the  absence  of any  required  governmental  or  regulatory
approval or consent  necessary  for Raritan to issue the shares of Common  Stock
covered by the Option (the "Option  Shares") or United to exercise the Option or
prior to the expiration or termination of any waiting period required by law, or
(ii) so long as any  injunction  or other order,  decree or ruling issued by any
federal or state court of competent  jurisdiction  is in effect which  prohibits
the sale or delivery of the Option Shares.

                  Raritan  shall  notify  United  promptly  in  writing  of  the
occurrence of any  Triggering  Event known to it, it being  understood  that the
giving of such notice by Raritan shall not be a condition to the right of United
to exercise  the Option.  Raritan  will not take any action which would have the
effect of preventing or disabling  Raritan from  delivering the Option Shares to
United upon exercise of the Option or otherwise performing its obligations under
this Agreement.

                  In the event  United  wishes to  exercise  the Option  after a
Triggering  Event has occurred and prior to the  termination of this  Agreement,
United shall send a written  notice to Raritan (the date of which is hereinafter
referred to as the "Notice Date"),  specifying the total number of Option Shares
it wishes to purchase  and a place and date (not less than three days after such
notice is sent to Raritan)  for the  closing of such a purchase  (a  "Closing");
provided,  however,  that a Closing  shall not occur prior to two days after the
later of receipt of any necessary regulatory approvals and the expiration of any
legally required notice or waiting period, if any.

                  3.  Payment  and  Delivery  of  Certificates.  At any  Closing
hereunder (a) United will make payment to Raritan of the aggregate price for the
Option Shares so purchased by wire transfer of immediately available funds to an
account  designated  by  Raritan,  (b)  Raritan  will  deliver to United a stock
certificate  or  certificates  representing  the  number  of  Option  Shares  so
purchased,  free and clear of all liens, claims, charges and encumbrances of any
kind or nature whatsoever created by or through Raritan,  registered in the name
of United or its designee,  in such denominations as were specified by United in
its notice of exercise  and, if  necessary,  bearing a legend as set forth below
and (c) United shall pay any  transfer or other taxes  required by reason of the
issuance of the Option Shares so purchased.



                  If required under applicable federal securities laws, a legend
will be  placed  on each  stock  certificate  evidencing  Option  Shares  issued
pursuant to this Agreement, which legend will read substantially as follows:

                         The shares of stock evidenced by this  certificate have
                  not been  registered for sale under the Securities Act of 1933
                  (the "1933 Act"). These shares may not be sold, transferred or
                  otherwise  disposed of unless a  registration  statement  with
                  respect to the sale of such  shares  has been filed  under the
                  1933 Act and declared  effective or, in the opinion of counsel
                  reasonably  acceptable to Raritan  Bancorp Inc., said transfer
                  would be exempt from registration  under the provisions of the
                  1933 Act and the regulations promulgated thereunder.

No such  legend  shall be  required  if a  registration  statement  is filed and
declared effective under Section 4 hereof.

                  4.  Registration  Rights.  Upon or after the  occurrence  of a
Triggering  Event and upon receipt of a written  request  from  United,  Raritan
shall, if necessary for the resale of the Option or the Option Shares by United,
prepare and file a  registration  statement  with the  Securities  and  Exchange
Commission and any state  securities  bureau covering the Option and such number
of Option Shares as United shall  specify in its request,  and Raritan shall use
its best efforts to cause such registration  statement to be declared  effective
in order to permit  the sale or other  disposition  of the Option and the Option
Shares,  provided that United shall in no event have the right to have more than
one such registration statement become effective.

                  In  connection  with such filing,  Raritan  shall use its best
efforts  to  cause  to be  delivered  to  United  such  certificates,  opinions,
accountant's  letters and other documents as United shall reasonably request and
as are customarily provided in connection with registrations of securities under
the  Securities  Act of 1933,  as amended.  All expenses  incurred by Raritan in
complying with the provisions of this Section 4, including  without  limitation,
all registration and filing fees,  printing expenses,  fees and disbursements of
counsel  for Raritan  and blue sky fees and  expenses  shall be paid by Raritan.
Underwriting  discounts and  commissions to brokers and dealers  relating to the
Option  Shares,  fees and  disbursements  of  counsel  to  United  and any other
expenses incurred by United in connection with such registration  shall be borne
by United.  In connection  with such filing,  Raritan  shall  indemnify and hold
harmless United against any losses,  claims,  damages or  liabilities,  joint or
several,  to which United may become  subject,  insofar as such losses,  claims,
damages or liabilities (or actions in respect thereof) arise out of or are based
upon any untrue  statement or alleged  untrue  statement  of any  material  fact
contained in any preliminary or final registration statement or any amendment or
supplement  thereto,  or arise  out of a  material  fact  required  to be stated
therein or necessary to make the statements therein not misleading;  and Raritan
will  reimburse  United for any legal or other  expense  reasonably  incurred by
United in  connection  with  investigating  or defending  any such loss,  claim,
damage, liability or action; provided,  however, that Raritan will not be liable
in any case to the extent that any such loss, claim,  damage or liability arises
out of or is based upon an untrue  statement  or  alleged  untrue  statement  of
omission or alleged  omission  made in such  preliminary  or final  registration
statement  or such  amendment  or  supplement  thereto in  reliance  upon and in
conformity  with  written  information  furnished  by or  on  behalf  of  United
specifically for use in the preparation thereof.  United will indemnify and hold
harmless  Raritan to the same extent as set forth in the  immediately  preceding
sentence but only with reference to written information  specifically  furnished
by or on behalf of United  for use in the  preparation  of such  preliminary  or
final registration statement or such amendment or supplement thereto; and United
will  reimburse  Raritan for any legal or other expense  reasonably  incurred by
Raritan in connection  with  investigating  or defending  any such loss,  claim,
damage, liability or action.

                  5. Adjustment Upon Changes in Capitalization.  In the event of
any change in the Common Stock by reason of stock dividends, split-ups, mergers,
recapitalizations,  combinations,  conversions, exchanges of shares or the like,
then  the  number  and kind of  Option  Shares  and the  Option  Price  shall be
appropriately adjusted.

                  In the event any capital reorganization or reclassification of
the Common Stock, or any consolidation, merger or similar transaction of Raritan
with another entity, or in the event any sale of all or substantially all of the
assets of Raritan  shall be  effected  in such a way that the  holders of Common
Stock shall be entitled to receive  stock,  securities or assets with respect to
or in exchange for Common Stock,  then,  as a condition of such  reorganization,
reclassification,  consolidation, merger or sale, lawful and adequate provisions
(in form reasonably satisfactory to the holder hereof) shall be made whereby the
holder hereof shall  thereafter  have the right to purchase and receive upon the
basis and upon the  terms and  conditions  specified  herein  and in lieu of the
Common Stock immediately theretofore purchasable and receivable upon exercise of
the rights  represented  by this  Option,  such shares of stock,  securities  or
assets as may be issued or payable with respect to or in exchange for the number
of shares of Common Stock  immediately  theretofore  purchasable  and receivable
upon exercise of the rights represented by this Option had such  reorganization,
reclassification,  consolidation,  merger  or sale not  taken  place;  provided,
however,  that if such  transaction  results  in the  holders  of  Common  Stock
receiving only cash, the holder hereof shall be paid the difference  between the
Option  Price and such  cash  consideration  without  the need to  exercise  the
Option.

                  6. Filings and  Consents.  Each of United and Raritan will use
its best efforts to make all filings with, and to obtain  consents of, all third
parties  and  governmental  authorities  necessary  to the  consummation  of the
transactions contemplated by this Agreement.

                  Exercise  of the Option  herein  provided  shall be subject to
compliance with all applicable laws including, in the event United is the holder
hereof,  approval of the Board of  Governors of the Federal  Reserve  System and
Raritan  agrees  to  cooperate  with  and  furnish  to the  holder  hereof  such
information  and  documents  as  may  be  reasonably  required  to  secure  such
approvals.

                  7.  Representations and Warranties of Raritan.  Raritan hereby
represents and warrants to United as follows:

                         a. Due Authorization.  Raritan has full corporate power
and authority to execute,  deliver and perform this  Agreement and all corporate
action  necessary for the execution,  delivery and performance of this Agreement
has been duly taken by Raritan.
<PAGE>
                         b. Authorized Shares. Raritan has taken and, as long as
the Option is outstanding, will take all necessary corporate action to authorize
and reserve for issuance all shares of Common Stock that may be issued  pursuant
to any exercise of the Option.

                         c. No Conflicts.  Neither the execution and delivery of
this  Agreement  nor  consummation  of  the  transactions   contemplated  hereby
(assuming all  appropriate  regulatory  approvals) will violate or result in any
violation or default of or be in conflict with or constitute a default under any
term of the certificate of incorporation or by-laws of Raritan or any agreement,
instrument, judgment, decree, statute, rule or order applicable to Raritan.

                         8. Specific Performance. The parties hereto acknowledge
that damages  would be an inadequate  remedy for a breach of this  Agreement and
that the  obligations of the parties hereto shall be  specifically  enforceable.
Notwithstanding the foregoing, United shall have the right to seek money damages
against Raritan for a breach of this Agreement.

                  9. Entire  Agreement.  This Agreement  constitutes  the entire
agreement  between the parties  with  respect to the subject  matter  hereof and
supersedes all other prior agreements and understandings, both written and oral,
among the parties or any of them with respect to the subject matter hereof.

                  10.  Assignment  or Transfer.  United may not sell,  assign or
otherwise transfer its rights and obligations hereunder, in whole or in part, to
any person or group of  persons  other than to an  affiliate  of United,  except
after  the  occurrence  of a  Triggering  Event.  United  represents  that it is
acquiring the Option for United's own account and not with a view to or for sale
in connection with any  distribution of the Option or the Option Shares.  United
shall have the right to assign this  Agreement to any party it selects after the
occurrence of a Triggering Event.

                  11.  Amendment of Agreement.  By mutual consent of the parties
hereto, this Agreement may be amended in writing at any time, for the purpose of
facilitating  performance  hereunder or to comply with any applicable regulation
of any  governmental  authority or any applicable  order of any court or for any
other purpose.

                  12.  Validity.  The  invalidity  or  unenforceability  of  any
provision of this Agreement shall not affect the validity or  enforceability  of
any other  provisions  of this  Agreement,  which shall remain in full force and
effect.

                  13.  Notices.  All  notices,  requests,   consents  and  other
communications  required or permitted hereunder shall be in writing and shall be
deemed to have been duly given when delivered  personally,  by express  service,
cable,  telegram or telex, or by registered or certified mail (postage  prepaid,
return receipt requested) to the respective parties as follows:

                  (a)      If to United, to:

                           United National Bancorp
                           1130 Route 22 East, P.O. Box 6000
                           Bridgewater, New Jersey 08807-0010
                           Attn.:  Thomas C. Gregor, Chairman,
                                    President and Chief Executive Officer

                  With a copy to:

                           Pitney, Hardin, Kipp & Szuch
                           Attn.:  Michael W. Zelenty, Esq.
                           By Hand: 200 Campus Drive
                                    Florham Park, New Jersey 07932-0950
                           By Mail: P.O. Box 1945
                                    Morristown, New Jersey 07962-1945

                  (b)      If to Raritan, to:

                           Raritan Bancorp Inc.
                           454 Route 28
                           Bridgewater, New Jersey 08807
                           Attn.:  Arlyn D. Rus, Chairman,
                                    President and Chief Executive Officer

                  With a copy to:

                           Luse Lehman Gorman Pomerenk & Schick PC
                           5335 Wisconsin Avenue N.W.
                           Washington, D.C. 20015
                           Attn.:  John J. Gorman

                  or such other  addresses  as shall be  furnished in writing by
any party,  and any such notice or  communications  shall be deemed to have been
given as of the date so delivered or telecopied and mailed.
<PAGE>
                  14.  Governing  Law. This  Agreement  shall be governed by and
construed in accordance with the laws of the State of New Jersey.

                  15.  Captions.  The captions in the Agreement are inserted for
convenience and reference purposes,  and shall not limit or otherwise affect any
of the terms or provisions hereof.

                  16. Waivers and Extensions.  The parties hereto may, by mutual
consent,  extend the time for  performance of any of the  obligations or acts of
either  party  hereto.  Each  party  may waive  (i)  compliance  with any of the
covenants of the other party  contained in this Agreement  and/or (ii) the other
party's performance of any of its obligations set forth in this Agreement.

                  17. Parties in Interest.  This Agreement shall be binding upon
and inure  solely to the  benefit  of each  party  hereto,  and  nothing in this
Agreement,  express or implied,  is intended to confer upon any other person any
rights  or  remedies  of any  nature  whatsoever  under  or by  reason  of  this
Agreement,  except as  provided  in Section 10  permitting  United to assign its
rights and obligations hereunder.

                  18.  Counterparts.  This  Agreement  may be executed in two or
more counterparts,  each of which shall be deemed to be an original,  but all of
which shall constitute one and the same agreement.

                  19.  Termination.  This Agreement  shall terminate upon either
the termination of the Merger  Agreement as provided therein or the consummation
of the transactions  contemplated by the Merger  Agreement;  provided,  however,
that if  termination  of the Merger  Agreement  occurs after the occurrence of a
Triggering  Event (as  defined in Section 2 hereof),  this  Agreement  shall not
terminate until the later of 18 months  following the date of the termination of
the Merger  Agreement or the  consummation  of any proposed  transactions  which
constitute the Triggering Event.

                  IN WITNESS  WHEREOF,  each of the parties hereto,  pursuant to
resolutions  adopted by its Board of Directors,  has caused this Agreement to be
executed by its duly authorized officer,  all as of the day and year first above
written.

                                          RARITAN BANCORP INC.


                                          By:    ARLYN D. RUS
                                             -----------------------------------
                                                 Arlyn D. Rus


                                          UNITED NATIONAL BANCORP


                                          By:    THOMAS C. GREGOR
                                             -----------------------------------
                                                 Thomas C. Gregor


<PAGE>

                                                                     EXHIBIT C

___________, 1998


Board of Directors
Raritan Bancorp Inc.
454 Route 28
Bridgewater, NJ  08807

Attention:        Mr. Arlyn D. Rus
                  Chairman of the Board of Directors

Directors:

         You have  requested  our opinion as to the  fairness,  from a financial
point of view, to the holders of the  outstanding  shares of common  stock,  par
value  $0.01  per  share  (the  "Raritan  Shares"),   of  Rartian  Bancorp  Inc.
("Raritan") of the exchange  ratio (as described  below,  the "Exchange  Ratio")
pursuant to the  Agreement  and Plan of Merger,  dated as of September  22, 1998
(the "Merger  Agreement"),  between Raritan and United National Bancorp ("United
National").

         Pursuant  to the  Merger  Agreement,  Raritan  will merge with and into
United  National (the  "Merger")  and each Raritan Share issued and  outstanding
immediately prior to the Effective Time (subject to certain exceptions) shall be
converted  into 1.45 shares  (the  "Exchange  Ratio") of common  stock of United
National, par value $1.25 per share ("United National Common Stock"), subject to
adjustment  as described in the Merger  Agreement.  As a result of the 10% stock
dividend   declared   September  16,  1998  and  payable  November  2,  1998  to
shareholders  of record on October 15,  1998 by United  National,  the  Exchange
ratio has been adjusted to 1.595 shares of common stock of United National,  par
value  $1.125  per  share.  It is our  understanding  that  the  merger  will be
accounted for as a  pooling-of-interests  under  generally  accepted  accounting
principles.

         The investment banking business of Endicott Financial Advisors,  L.L.C.
("Endicott")  includes  the  valuation  of  financial   institutions  and  their
securities  in  connection  with mergers and  acquisitions  and other  corporate
transactions.

         In connection with this opinion, we have reviewed and considered, among
other  things:  (a) the Merger  Agreement;  (b) audited  consolidated  financial
statements and management's  discussion and analysis of the financial  condition
and results of operations for each of Raritan and United  National for the three
fiscal years ended  December 31, 1995,  December 31, 1996 and December 31, 1997;
(c) unaudited consolidated financial statements and management's  discussion and
analysis  of the  financial  condition  and  results of  operations  for each of
Raritan and United National for the quarters ended March 31, 1998, June 30, 1998
and  September 30, 1998;  (d)  financial  analyses and forecasts for Raritan and
United National  prepared by and/or reviewed with the respective  managements of
Raritan and United National;  (e) the views of senior  management of Raritan and
United  National  of their  respective  past and  current  business  operations,
results thereof,  financial condition and future prospects; (f) certain reported
price and trading  activity for the Raritan and United  National  common  stock,
including a comparison of certain  financial and stock market  information  with
similar  information  for certain other  companies  the  securities of which are
publicly traded; (g) the financial terms of recent business  combinations in the
banking  industry;  (h)  the  pro-forma  impact  of the  transaction  on  United
National;   (i)  the  current  market  environment  generally  and  the  banking
environment in particular;  and (j) such other  information,  financial studies,
analyses and  investigations  and financial,  economic and market criteria as we
considered relevant.

         In  performing  our review,  we have assumed and relied  upon,  without
independent verification,  the accuracy and completeness of all of the financial
information,  analyses and other information  reviewed by and discussed with us,
and we did not make an  independent  evaluation  or  appraisal  of the  specific
assets,  the collateral  securing assets or the liabilities of Raritan or United
National or any of their subsidiaries,  or the collectibility of any such assets
(relying,  where  relevant on the analyses  and  estimates of Raritan and United
National).  With respect to the financial  projections reviewed with management,
we have assumed that they reflect the best  currently  available  estimates  and
judgments of the  respective  managements  of the  respective  future  financial
performances of each of Raritan and United National and of the combined company,
and that such performances will be achieved. We have also assumed that there has
been no material  change in Raritan's  or United  National's  assets,  financial
condition,  results of operations,  business or prospects  since the date of the
last financial  statements  made  available to us. We have also assumed  without
independent  verification  that the  aggregate  consolidated  allowance for loan
losses for Raritan and United  National were  adequate to cover such losses.  We
have further  assumed that the  conditions  precedent in the  Agreement  are not
waived.

         Our  opinion  is  necessarily  based  on  economic,  market  and  other
conditions as in effect on, and the information  made available to us as of, the
date hereof.  Events occurring after the date hereof could materially affect the
assumptions  used in preparing this opinion.  We have not undertaken to reaffirm
or revise this opinion or otherwise  comment upon any events occurring after the
date hereof.

         We have acted as Raritan's  financial  advisor in  connection  with the
Merger and will receive a fee for our services,  a significant  portion of which
is contingent upon  consummation  of the Merger.  We will also receive a fee for
rendering this opinion.

         It is understood  that this opinion is not to be quoted or referred to,
in  whole  or  in  part,  in a  registration  statement,  prospectus,  or  proxy
statement, or in any other document used in connection with the offering or sale
of  securities,  nor shall this letter be used for any other  purposes,  without
Endicott's prior written consent,  provided,  however, that we hereby consent to
the inclusion of this opinion in this Joint Proxy  Statement-Prospectus  and the
Registration Statement on Form S-4 of which it comprises a part.

         Based upon and subject to the foregoing,  it is our opinion that, as of
the date hereof,  the Exchange  Ratio is fair from a financial  point of view to
the holders of Raritan Shares.



                                            Very Truly Yours,





                                            ENDICOTT FINANCIAL ADVISORS, L.L.C.


<PAGE>

                                     PART II

                   INFORMATION NOT REQUIRED IN THE PROSPECTUS


Item 20.  Indemnification of Directors and Officers.

                  Indemnification.  The  New  Jersey  Business  Corporation  Act
empowers a corporation  to indemnify a corporate  agent against his expenses and
liabilities  incurred in connection with any proceeding (other than a derivative
lawsuit)  involving the corporate  agent by reason of his being or having been a
corporate  agent  if (a) the  agent  acted  in good  faith  and in a  manner  he
reasonably  believed  to be in or not  opposed  to  the  best  interests  of the
corporation,  and (b) with respect to any  criminal  proceeding,  the  corporate
agent had no reasonable cause to believe his conduct was unlawful.  For purposes
of the Act, the term "corporate  agent" includes any present or former director,
officer,  employee  or  agent of the  corporation,  and a  person  serving  as a
"corporate agent" at the request of the corporation for any other enterprise.

                  With respect to any  derivative  action,  the  corporation  is
empowered  to  indemnify a corporate  agent  against his  expenses  (but not his
liabilities)  incurred in connection with any proceeding involving the corporate
agent by reason of his being or having been a corporate agent if the agent acted
in good faith and in a manner he reasonably  believed to be in or not opposed to
the best  interests  of the  corporation.  However,  only the court in which the
proceeding was brought can empower a corporation to indemnify a corporate  agent
against  expenses  with  respect to any  claim,  issue or matter as to which the
agent was adjudged liable for negligence or misconduct.

                  The  corporation may indemnify a corporate agent in a specific
case if a  determination  is made by any of the  following  that the  applicable
standard of conduct was met: (i) the Board of Directors, or a committee thereof,
acting by a majority  vote of a quorum  consisting of  disinterested  directors;
(ii) by  independent  legal counsel,  if there is not a quorum of  disinterested
directors  or  if  the  disinterested   quorum  empowers  counsel  to  make  the
determination; or (iii) by the shareholders.

                  A corporate agent is entitled to mandatory  indemnification to
the  extent  that the agent is  successful  on the  merits or  otherwise  in any
proceeding,  or in defense of any claim, issue or matter in the proceeding. If a
corporation  fails or  refuses to  indemnify  a  corporate  agent,  whether  the
indemnification  is permissive  or mandatory,  the agent may apply to a court to
grant him the requested indemnification.  In advance of the final disposition of
a proceeding, the corporation may pay an agent's expenses if the agent agrees to
repay  the  expenses  unless  it is  ultimately  determined  he is  entitled  to
indemnification.

         Exculpation.  Article 4 of the certificate of  incorporation  of United
National Bancorp provides:

                           1. Elimination of Certain  Liability of Directors.  A
                  director of the Corporation  shall not be personally liable to
                  the Corporation or its  shareholders for damages for breach of
                  any duty owed to the Corporation or its  shareholders,  except
                  for  liability  for any  breach of duty  based  upon an act or
                  omission (a) in breach of such person's duty of loyalty to the
                  Corporation  or its  shareholders,  (b) not in good  faith  or
                  involving  a knowing  violation  of law, or (c)  resulting  in
                  receipt by such person of an improper personal benefit. If the
                  New Jersey Business  Corporation Act is amended after approval
                  by the  shareholders of this provision to authorize  corporate
                  action further  eliminating or limiting the personal liability
                  of  directors or  officers,  then the  liability of a director
                  and/or  officer  of the  Corporation  shall be  eliminated  or
                  limited  to the  fullest  extent  permitted  by the New Jersey
                  Business Corporation Act as so amended.

                           2.  Elimination  of Certain  Liability  of  Officers.
                  Unless   provided   otherwise   by  law,  an  officer  of  the
                  Corporation  shall not be personally liable to the Corporation
                  or its shareholders for damages for breach of any duty owed to
                  the Corporation or its shareholders,  except for liability for
                  any breach of duty based upon an act or omission (a) in breach
                  of such  person's  duty of loyalty to the  Corporation  or its
                  shareholders,  (b) not in good  faith or  involving  a knowing
                  violation of law or (c) resulting in receipt by such person of
                  an improper personal benefit.

                           3. Repeal or Modification of this Article. Any repeal
                  or   modification   of  the   foregoing   paragraphs   by  the
                  shareholders of the Corporation shall not adversely affect any
                  right  or  protection  of a  director  or an  officer  of  the
                  Corporation   existing   at  the  time  of  such   repeal   or
                  modification.

The New Jersey Business Corporation Act, as it affects exculpation, has not been
changed since the adoption of this provision by United National Bancorp in 1987.

Item 21.

A.  Exhibits

Exhibit No.      Description

2(a)*            Amended  and  Restated  Agreement  and  Plan of  Merger,  dated
                 September  22,  1998,  by and among  United  National  Bancorp,
                 United  National  Bank,  Raritan  Bancorp  Inc. and The Raritan
                 Savings  Bank,  included  as  Appendix  A to  the  Joint  Proxy
                 Statement-Prospectus.

2(b)*            Stock Option Agreement,  dated September 22, 1998, by and among
                 United National  Bancorp and Raritan Bancorp Inc.,  included as
                 Appendix B to the Joint Proxy Statement-Prospectus.

5                Opinion of Pitney,  Hardin,  Kipp & Szuch as to the legality of
                 the securities to be registered.

8                Opinion  of  Pitney,  Hardin,  Kipp & Szuch as to  certain  tax
                 consequences of the Merger.

23(a)            Consent  of KPMG  Peat  Marwick  LLP  with  respect  to  United
                 National Bancorp.

23(b)            Consent of Arthur Andersen, LLP with respect to United National
                 Bancorp.

23(c)            Consent  of KPMG  Peat  Marwick  LLP with  respect  to  Raritan
                 Bancorp Inc.

23(d)            Consent of Endicott Financial Advisors,  L.L.C. with respect to
                 United National Bancorp.

23(e)            Consent of Pitney, Hardin, Kipp & Szuch (included in Exhibits 5
                 and 8 hereto).

24               Power of Attorney of Officers and Directors of United  National
                 Bancorp.

99(a)            Form of Proxy Card to be utilized by the Board of  Directors of
                 United National Bancorp.

99(b)            Form of Proxy Card to be utilized by the Board of  Directors of
                 Raritan Bancorp Inc.

- ------------------------

*      Included elsewhere in this registration statement.


B.  Report, Opinion or Appraisals

         Form of Fairness Opinion of the Endicott Financial Advisors,  L.L.C. is
included as Appendix C to the Joint Proxy Statement-Prospectus.

Item 22.  Undertakings

1. The undersigned registrant hereby undertakes:

         (a) To file, during any period in which offers or sales are being made,
a post-effective amendment to this registration statement:

                  (i) To include any prospectus  required by Section 10(a)(3) of
the Securities Act of 1933.

                  (ii) To reflect in the  prospectus any facts or events arising
after the  effective  date of the  registration  statement  (or the most  recent
post-effective  amendment  thereof)  which,  individually  or in the  aggregate,
represent a fundamental  change in the information set forth in the registration
statement.  Notwithstanding the foregoing, any increase or decrease in volume of
securities  offered (if the total dollar value of  securities  offered would not
exceed that which was  registered) and any deviation from the low or high end of
the estimated  maximum offering range may be reflected in the form of prospectus
filed with the  Commission  pursuant  to Rule 424(b) if, in the  aggregate,  the
changes in volume  and price  represent  no more than 20  percent  change in the
maximum  aggregate  offering price set forth in the "Calculation of Registration
Fee" table in the effective registration statement

                  (iii) To include any material  information with respect to the
plan of distribution not previously  disclosed in the registration  statement or
any material change to such information in the registration statement.

         (b) That for purposes of determining any liability under the Securities
Act of 1933 , each  such  post-effective  amendment  shall be deemed to be a new
registration  statement  relating to the  securities  offered  therein,  and the
offering of such  securities at that time shall be deemed to be the initial bona
fide offering thereof.

         (c) To remove from registration by means of a post effective  amendment
any of the securities being registered which remain unsold at the termination of
the offering.

2.  The  undersigned   registrant   hereby  undertakes  that,  for  purposes  of
determining  any liability  under the Securities Act of 1933, each filing of the
registrant's  annual report pursuant to Section 13(a) or 15(d) of the Securities
Exchange Act of 1934 (and, where applicable,  each filing of an employee benefit
plan's annual report pursuant to Section 15(d) of the Securities Exchange Act of
1934) that is incorporated by reference in the  registration  statement shall be
deemed to be a new  registration  statement  relating to the securities  offered
therein,  and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.

3. The undersigned  registrant hereby  undertakes as follows:  that prior to any
public  reoffering  of the  securities  registered  hereunder  through  use of a
prospectus  which is a part of this  registration  statement,  by any  person or
party who is deemed to be an underwriter  within the meaning of Rule 145(c), the
issuer  undertakes that such reoffering  prospectus will contain the information
called for by the  applicable  registration  form with respect to reofferings by
persons who may be deemed  underwriters,  in addition to the information  called
for by the other items of the applicable form.

4. The registrant undertakes that every prospectus (i) that is filed pursuant to
paragraph  2  immediately   preceding,   or  (ii)  that  purports  to  meet  the
requirements  of Section 10(a) (3) of the Act and is used in connection  with an
offering  of  securities  subject  to Rule  415,  will be  filed as a part of an
amendment  to the  registration  statement  and  will  not be  used  until  such
amendment is  effective,  and that,  for purposes of  determining  any liability
under the Securities Act of 1933,  each such post effective  amendment  shall be
deemed to be a new  registration  statement  relating to the securities  offered
therein,  and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.

5. Insofar as indemnification  for liabilities  arising under the Securities Act
of 1933 may be permitted to directors,  officers and controlling  persons of the
registrant pursuant to the foregoing  provisions,  or otherwise,  the registrant
has been advised that in the opinion of the Securities  and Exchange  Commission
such  indemnification  is against  public policy as expressed in the Act and is,
therefore,  unenforceable. In the event that a claim for indemnification against
such liabilities  (other than the payment by the registrant of expenses incurred
or paid by a director,  officer or  controlling  person of the registrant in the
successful  defense of any  action,  suit or  proceeding)  is  asserted  by such
director,  officer or controlling person in connection with the securities being
registered, the registrant will, unless in the opinion of its counsel the matter
has been  settled by  controlling  precedent,  submit to a court of  appropriate
jurisdiction the question whether such  indemnification  by it is against public
policy as expressed in the Act and will be governed by the final adjudication of
such issue.

6. The  undersigned  registrant  hereby  undertakes  to respond to requests  for
information  that is incorporated  by reference into the prospectus  pursuant to
Items 4, 10(b),  11, or 13 of this form,  within one  business day of receipt of
such  request,  and to send the  incorporated  documents  by first class mail or
other equally  prompt means.  This includes  information  contained in documents
filed subsequent to the effective date of the registration statement through the
date of responding to the request.

7. Subject to appropriate  interpretation,  the  undersigned  registrant  hereby
undertakes  to supply by means of a  post-effective  amendment  all  information
concerning a transaction,  and the company being acquired involved therein, that
was not the  subject  of and  included  in the  registration  statement  when it
becomes effective.

<PAGE>

                                   SIGNATURES

         Pursuant  to the  requirements  of the  Securities  Act  of  1933,  the
Registrant  has duly  caused  this  registration  statement  to be signed on its
behalf  by the  undersigned,  thereunto  duly  authorized,  in the  Township  of
Bridgewater, State of New Jersey, on November 17, 1998.


                                        UNITED NATIONAL BANCORP

                                            THOMAS C. GREGOR
                                     By:__________________________________
                                        Thomas C. Gregor, Chairman,
                                        President and Chief Executive Officer


         Signature             Title                              Date

THOMAS C. GREGOR
- ------------------------  Chairman, President and Chief      November 17, 1998
Thomas C. Gregor                Executive Officer

DONALD W. MALWITZ
- ------------------------   Vice President and Treasurer      November 17, 1998
Donald W. Malwitz         (Principal Financial Officer)

A. RICHARD ABRAHAMIAN
- ------------------------    Senior Vice President and        November 17, 1998
A. Richard Abrahamian      Chief Accounting Officer of
                               United National Bank
                          (Principal Accounting Officer)

GEORGE W. BLANK  
- -----------------------               Director               November 17, 1998
George W. Blank

DONALD A. BUCKLEY
- -----------------------               Director               November 17, 1998
Donald A. Buckley

C. DOUGLAS CHERRY
- ----------------------                Director               November 17, 1998
C. Douglas Cherry


- ----------------------                Director               November __, 1998
Charles E. Hance

               
- ----------------------                Director               November __, 1998
John R. Kopicki

ANTONIA S. MAROTTA
- ----------------------                Director               November 17, 1998
Antonia S. Marotta

JOHN W. McGOWAN III
- ----------------------                Director               November 17, 1998
John W. McGowan III

PATRICIA A. McKIERNAN
- ----------------------                Director               November 17, 1998
Patricia A. McKiernan

                    
- ----------------------                Director               November __, 1998
Charles N. Pond, Jr.


- ----------------------                Director               November __, 1998
Paul K. Ross

DAVID R. WALKER
- ----------------------                Director               November 17, 1998
David R. Walker

RONALD E. WEST
- ----------------------                Director               November 17, 1998
Ronald E. West

GEORGE J. WICKARD
- ----------------------                Director               November 17, 1998
George J. Wickard


<PAGE>



                                INDEX TO EXHIBITS

Exhibit No.    Description

2(a)*          Amended  and  Restated  Agreement  and  Plan  of  Merger,   dated
               September 22, 1998, by and among United National Bancorp,  United
               National Bank, Raritan Bancorp Inc. and The Raritan Savings Bank,
               included as Appendix A to the Joint Proxy Statement-Prospectus.

2(b)*          Stock Option  Agreement,  dated  September 22, 1998, by and among
               United  National  Bancorp and Raritan  Bancorp Inc.,  included as
               Appendix B to the Joint Proxy Statement-Prospectus.

5              Opinion of Pitney, Hardin, Kipp & Szuch as to the legality of the
               securities to be registered.

8              Opinion  of  Pitney,  Hardin,  Kipp &  Szuch  as to  certain  tax
               consequences of the Merger.

23(a)          Consent of KPMG Peat Marwick LLP with respect to United  National
               Bancorp.

23(b)          Consent of Arthur  Andersen,  LLP with respect to United National
               Bancorp.

23(c)          Consent of KPMG Peat Marwick LLP with respect to Raritan  Bancorp
               Inc.

23(d)          Consent of Endicott  Financial  Advisors,  L.L.C. with respect to
               United National Bancorp.

23(e)          Consent of Pitney,  Hardin,  Kipp & Szuch (included in Exhibits 5
               and 8 hereto).

24             Power of Attorney of Officers and  Directors  of United  National
               Bancorp.

99(a)          Form of Proxy Card to be  utilized by the Board of  Directors  of
               United National Bancorp.

99(b)          Form of Proxy Card to be  utilized by the Board of  Directors  of
               Raritan Bancorp Inc.


- -----------------------------------

*     Included elsewhere in this registration statement.




                                                               EXHIBIT 5

                          PITNEY, HARDIN, KIPP & SZUCH
                                  P.O. BOX 1945
                        MORRISTOWN, NEW JERSEY 07962-1945


                                                        November 23, 1998
United National Bancorp
1130 Route 22 East
PO Box 6000
Bridgewater, New Jersey 08807

        Re:       Merger of United National Bancorp and Raritan Bancorp Inc.

                  We have acted as counsel to United National Bancorp ("United")
in connection with its proposed  issuance of common stock,  $1.25 par value (the
"Common  Stock"),  pursuant to the Amended and  Restated  Agreement  and Plan of
Merger among United,  United National Bank, Raritan Bancorp Inc. and The Raritan
Savings  Bank  dated  as of  September  12,  1998.  The  Common  Stock  is being
registered  pursuant to a Registration  Statement on Form S-4 (the "Registration
Statement") being filed with the Securities and Exchange  Commission on the date
hereof.

                  We have examined  originals,  or copies certified or otherwise
identified to our satisfaction,  of the Certificate of Incorporation and By-laws
of United as currently in effect, relevant resolutions of the Board of Directors
of United,  and such other documents as we have deemed  necessary or appropriate
in order to express the opinion set forth in this letter.

                  Based on the  foregoing  and  assuming  that the  Registration
Statement  has been  declared  effective  under the  Securities  Act of 1933, as
amended, we are of the opinion that when issued as described in the Registration
Statement,   including  the  Prospectus   relating  to  the  Common  Stock  (the
"Prospectus"),  the  Common  Stock  will  be  legally  issued,  fully  paid  and
non-assessable.

                  We hereby  consent to the use of this opinion as an Exhibit to
the  Registration  Statement and to the reference to this firm under the heading
"Legal Opinion" in the Prospectus.


                                             Very truly yours,


                                             PITNEY, HARDIN, KIPP & SZUCH



                                                                 EXHIBIT 8

                          PITNEY, HARDIN, KIPP & SZUCH
                                  P.O. BOX 1945
                        MORRISTOWN, NEW JERSEY 07962-1945


                                                           November 20, 1998



United National Bancorp
1130 Route 22 East
PO Box 6000
Bridgewater, New Jersey 08807

Raritan Bancorp Inc.
454 Route 28
Bridgewater, NJ 08807

Dear Ladies and Gentlemen:

                  We  have  acted  as  counsel  for  United   National   Bancorp
("United"),  a New Jersey  corporation and registered bank holding  company,  in
connection  with the  planned  merger (the  "Merger")  of Raritan  Bancorp  Inc.
("Raritan"),  a Delaware  corporation and registered bank holding company,  with
and into United,  pursuant to that certain  Amended and Restated  Agreement  and
Plan of Merger (the  "Agreement"),  dated as of September 22, 1998, by and among
United,  United National Bank, a national banking association ("UNB"),  Raritan,
and  Raritan  Savings  Bank,  a New  Jersey-chartered  stock  savings  bank (the
"Bank").

                  Capitalized  terms used but not defined  herein shall have the
meanings specified in the Proxy Statement-Prospectus pertaining to the Merger.

                  We have assumed with your consent that:

                  (a)      the Merger will be effected  in  accordance  with the
                           Agreement, and

                  (b)      the  representations  contained  in  the  letters  of
                           representation  from  United and  Raritan to us dated
                           November 20, 1998 will be true at the Effective Time.

                  On the basis of the foregoing,  and our  consideration of such
other matters of fact and law as we have deemed necessary or appropriate,  it is
our opinion,  under presently applicable federal income tax law, that the Merger
will constitute a reorganization  under Section 368 of the Internal Revenue Code
of 1986, as amended (the "Code"), and that:

                  (i)      no gain or loss will be recognized for federal income
                           tax purposes by United or Raritan in connection  with
                           the Merger;

                  (ii)     no gain or loss will be recognized for federal income
                           tax  purposes  by  Raritan   stockholders   upon  the
                           exchange  in the Merger of shares of  Raritan  Common
                           Stock  solely for United  Common  Stock  (except with
                           respect  to cash  received  in  lieu of a  fractional
                           share interest in United Common Stock);

                  (iii)    the  basis of United  Common  Stock  received  in the
                           Merger by Raritan  stockholders  (including the basis
                           of any  fractional  share  interest in stock) will be
                           the same as the basis of the shares of Raritan Common
                           Stock surrendered in exchange therefor;

                  (iv)     the holding period of United Common Stock received in
                           the Merger by  Raritan  stockholders  (including  the
                           holding  period of any  fractional  share interest in
                           stock) will include the holding  period  during which
                           the shares of Raritan  Common  Stock  surrendered  in
                           exchange   therefor   were   held   by  the   Raritan
                           stockholder,  provided such shares of Raritan  Common
                           Stock were held as capital assets; and

                  (v)      cash received by a holder of Raritan  Common Stock in
                           lieu of a fractional  share interest in United Common
                           Stock will be treated as  received  in  exchange  for
                           such  fractional  share  interest  and,  provided the
                           fractional  share  would have  constituted  a capital
                           asset in the hands of such holder,  the holder should
                           in  general  recognize  capital  gain  or  loss in an
                           amount equal to the difference  between the amount of
                           cash  received  and the portion of the  adjusted  tax
                           basis in the Raritan  Common  Stock  allocable to the
                           fractional share interest.

                  The tax consequences  described above may not be applicable to
Raritan stockholders that acquired the stock of Raritan pursuant to the exercise
of an employee  stock option or right or otherwise  as  compensation,  that hold
Raritan Common Stock as part of a "straddle" or "conversion transaction" or that
are insurance companies,  securities dealers,  financial institutions or foreign
persons.

                  We hereby  consent to the  reference  to us under the  heading
"THE  PROPOSED  MERGER  --  Federal  Income  Tax   Consequences"  in  the  Proxy
Statement-Prospectus  pertaining to the Merger and to the filing of this opinion
as an exhibit to the related  Registration  Statement on Form S-4 filed with the
Securities  and Exchange  Commission.  In giving this consent,  we do not hereby
admit that we are within the category of persons whose consent is required under
Section  7 of  the  Securities  Act of  1933,  as  amended,  or  the  rules  and
regulations of the Securities and Exchange Commission thereunder.


                                              Very truly yours,



                                              PITNEY, HARDIN, KIPP & SZUCH




                                                             EXHIBIT 23(a)


                        INDEPENDENT ACCOUNTANTS' CONSENT



The Board of Directors
United National Bancorp:


We consent to incorporation by reference in the registration  statement filed on
Form S-4 of United  National  Bancorp  of our report  dated  January  14,  1998,
relating  to the  consolidated  balance  sheets of United  National  Bancorp and
subsidiaries  as of  December  31,  1997 and 1996 and the  related  consolidated
statements of income,  changes in stockholders'  equity,  and cash flows for the
years then  ended,  which  report is included  in the  December  31, 1997 Annual
Report on Form 10-K of United National Bancorp. We also consent to the reference
to our firm under the heading "Experts" in the joint proxy statement-prospectus.


                                                  KPMG Peat Marwick LLP


Short Hills, New Jersey
November 19, 1998





                                                             EXHIBIT 23(b)

                       CONSENT OF INDEPENDENT ACCOUNTANTS


                  As independent  public  accountants,  we hereby consent to the
incorporation  by  reference in this  Registration  Statement on Form S-4 of our
report dated  January 12, 1996  incorporated  by  reference  in United  National
Bancorp's  Annual Report on Form 10-K and to all references to our firm included
in this Registration Statement.



                                                      ARTHUR ANDERSON LLP

Roseland, New Jersey
November 19, 1998




                                                             EXHIBIT 23(c)


                        INDEPENDENT ACCOUNTANTS' CONSENT



The Board of Directors
Raritan Bancorp Inc.:


We consent to incorporation  by reference in the registration  statement of Form
S-4 of United National Bancorp of our report dated January 16, 1998, relating to
the  consolidated  balance  sheets of Raritan  Bancorp Inc. and subsidiary as of
December 31, 1997 and 1996 and the related  consolidated  statements  of income,
changes  in  shareholders'  equity,  and cash flows for each of the years in the
three-year  period  ended  December  31,  1997,  which report is included in the
December  31, 1997 Annual  Report on Form 10-K of Raritan  Bancorp  Inc. We also
consent to the  reference  to our firm under the heading  "Experts" in the joint
proxy statement-prospectus.


                                                  KPMG Peat Marwick LLP


Short Hills, New Jersey
November 19, 1998



                                                           EXHIBIT 23(d)

                 CONSENT OF ENDICOTT FINANCIAL ADVISORS, L.L.C.


We hereby  consent  to the use of our firm's  name in the Form S-4  Registration
Statement of United National Bancorp ("UNB") and amendments  thereto relating to
the registration of shares of UNB common stock to be used in connection with the
proposed  acquisition of Raritan  Bancorp Inc.  ("RBI").  We also consent to the
inclusion   of  our  draft   opinion   letter  as  an   Appendix  to  the  Proxy
Statement-Prospectus  included as part of the Form S-4  Registration  Statement,
and to the references to our opinion included in the Proxy Statement-Prospectus.



                                        ENDICOTT FINANCIAL ADVISORS, L.L.C.


Date:  November 19, 1998


                                                                  EXHIBIT 24
                                POWER OF ATTORNEY

         KNOW  ALL MEN BY THESE  PRESENTS,  that  each  person  whose  signature
appears below constitutes and appoints Thomas C. Gregor,  his  attorney-in-fact,
with power of substitution,  for him in any and all capacities,  to sign any and
all amendments (whether pre- or post-effective),  to this Registration Statement
on Form S-4 of United  National  Bancorp (SEC File Number  333-________)  and to
file  the  same,  with  exhibits  thereto  and  other  documents  in  connection
therewith,  with the Securities and Exchange  Commission,  hereby  ratifying and
confirming all that said attorney-in-fact, or his substitute or substitutes, may
do or cause to be done by virtue thereof.

         Pursuant  to the  requirements  of the  Securities  Act of  1933,  this
registration  statement  has  been  signed  by  the  following  persons  in  the
capacities and on the dates indicated.
<TABLE>
<CAPTION>
       Signature                      Title                               Date
<S>                                 <C>                                <C>
THOMAS C. GREGOR
- -------------------------------     Chairman, President and Chief      November 17, 1998
Thomas C. Gregor                          Executive Officer

DONALD W. MALWITZ
- -------------------------------      Vice President and Treasurer      November 17, 1998
Donald W. Malwitz                   (Principal Financial Officer)
                                      Senior Vice President and
A. RICHARD ABRAHAMIAN
- -------------------------------      Chief Accounting Officer of       November 17, 1998
A. Richard Abrahamian                    United National Bank
                                    (Principal Accounting Officer)
GEORGE W. BLANK    
- -------------------------------                Director                November 17, 1998
George W. Blank

DONALD A. BUCKLEY
- -------------------------------                Director                November 17, 1998
Donald A. Buckley

C. DOUGLAS CHERRY
- -------------------------------                Director                November 17, 1998
C. Douglas Cherry


- -------------------------------                Director                November __, 1998
Charles E. Hance


- -------------------------------                Director                November___, 1998
John R. Kopicki

ANTONIA S. MAROTTA
- -------------------------------                Director                November 17, 1998
Antonia S. Marotta

JOHN W. McGOWAN III
- -------------------------------                Director                November 17, 1998
John W. McGowan III

PATRICIA A. McKIERNAN
- -------------------------------                Director                November 17, 1998
Patricia A. McKiernan

 .                                              Director                _________, 1998
- -------------------------------
Charles N. Pond, Jr.

- -------------------------------                Director                _________, 1998
Paul K. Ross

DAVID R. WALKER
- -------------------------------                Director                November 17, 1998
David R. Walker

RONALD E. WEST
- -------------------------------                Director                November 17, 1998
Ronald E. West

GEORGE J. WICKARD
- -------------------------------                Director                November 27, 1998
George J. Wickard

</TABLE>





                                                              EXHIBIT 99(a)

                             UNITED NATIONAL BANCORP

                                      PROXY

                       FOR SPECIAL MEETING OF SHAREHOLDERS

                                                                __________, 1998

                  SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS

      The undersigned hereby appoints  ________________ and ________________ and
each of them, as Proxy, each with full power of substitution, to vote all of the
stock of United National Bancorp  ("United")  standing in the undersigned's name
at  the   Special   Meeting   of   Shareholders   of   United   to  be  held  at
_______________________________________,  on  ____________ at _____ a.m., and at
any adjournments or postponements  thereof.  The undersigned  hereby revokes any
and all proxies heretofore given with respect to such meeting.

This proxy will be voted as  specified  below.  If no choice is  specified,  the
proxy  will be voted FOR the  approval  of the merger of  Raritan  Bancorp  Inc.
("Raritan") with and into United.


                           (continued on reverse side)


<PAGE>



1.  Proposal to Approve the merger of Raritan  with and into United  pursuant to
the Amended and Restated  Agreement and Plan of Merger dated as of September 22,
1998 among United, Raritan, United National Bank and The Raritan Savings Bank.

                  [  ] FOR APPROVAL [  ] AGAINST APPROVAL     [  ] ABSTAIN

2. In their  discretion,  the  Proxies  are  authorized  to vote upon such other
business as may properly come before the meeting.


THE BOARD OF DIRECTORS RECOMMENDS A VOTE "FOR" THE PROPOSAL IN ITEM 1.

This proxy when properly  executed,  will be voted in the manner directed herein
by the undersigned  shareholder(s).  If no direction is made, this proxy will be
voted "FOR" the proposal listed under Item 1 above.


THIS PROXY IS SOLICITED  ON BEHALF OF THE BOARD OF DIRECTORS  AND MAY BE REVOKED
BY THE  SHAREHOLDER  PRIOR TO ITS  EXERCISE,  BY  DELIVERING  WRITTEN  NOTICE OF
REVOCATION TO THE SECRETARY OF UNITED PRIOR TO THE MEETING OR, IF THE MEETING IS
IN PROGRESS,  BY FILING  NOTICE OF REVOCATION  WITH THE  SECRETARY  PRIOR TO THE
TABULATION OF VOTES.

                                                  Signature of Shareholder(s):
                                            ====================================
Number of Shares: ________________

Dated: __________________________
(Please insert date at left, sign exactly as name appears on record, and mail in
the   enclosed   envelope.   When   signing  as  Officer,   Partner,   Executor,
Administrator, Trustee or Guardian, please give full title. For Corporations, if
the officer  signing is not the  President or a Vice  President,  please  submit
evidence of your authority to sign. For joint accounts,  each joint owner should
sign.)




                                                              EXHIBIT 99(b)

                              RARITAN BANCORP INC.

                                      PROXY

                       FOR SPECIAL MEETING OF STOCKHOLDERS

                                                         __________, 1998

                  SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS

      The undersigned hereby appoints  ________________ and ________________ and
each of them, as Proxy, each with full power of substitution, to vote all of the
stock of Raritan Bancorp Inc.  ("Raritan") standing in the undersigned's name at
the Special  Meeting of  Stockholders  of Raritan,  to be held at Raritan Valley
Country Club, State Highway 28, Somerville, New Jersey 08876, on ____________ at
_____ a.m., and at any  adjournments or postponements  thereof.  The undersigned
hereby  revokes  any and all  proxies  heretofore  given  with  respect  to such
meeting.

This proxy will be voted as  specified  below.  If no choice is  specified,  the
proxy will be voted FOR the  approval  of the  merger of  Raritan  with and into
United National Bancorp.


                           (continued on reverse side)


<PAGE>



1.  Proposal  to Approve  the merger of Raritan  with and into  United  National
Bancorp  ("United")  pursuant to the Amended and Restated  Agreement and Plan of
Merger dated as of September 22, 1998 among  United,  Raritan,  United  National
Bank and The Raritan Savings Bank.

                  [  ] FOR APPROVAL [  ] AGAINST APPROVAL     [  ] ABSTAIN

2. In their  discretion,  the  Proxies  are  authorized  to vote upon such other
business as may properly come before the meeting.

                                         
THE BOARD OF DIRECTORS RECOMMENDS A VOTE "FOR" THE PROPOSAL IN ITEM 1.

This proxy when properly  executed,  will be voted in the manner directed herein
by the undersigned  stockholder(s).  If no direction is made, this proxy will be
voted "FOR" the proposal listed under Item 1 above.


THIS PROXY IS SOLICITED  ON BEHALF OF THE BOARD OF DIRECTORS  AND MAY BE REVOKED
BY THE  STOCKHOLDER  PRIOR TO ITS  EXERCISE,  BY  DELIVERING  WRITTEN  NOTICE OF
REVOCATION  TO THE  SECRETARY OF RARITAN PRIOR TO THE MEETING OR, IF THE MEETING
IS IN PROGRESS,  BY FILING NOTICE OF REVOCATION  WITH THE SECRETARY PRIOR TO THE
TABULATION OF VOTES.

                                               Signature of Stockholder(s):
                                            ====================================
Number of Shares: ________________

Dated: __________________________
(Please insert date at left, sign exactly as name appears on record, and mail in
the   enclosed   envelope.   When   signing  as  Officer,   Partner,   Executor,
Administrator, Trustee or Guardian, please give full title. For Corporations, if
the officer  signing is not the  President or a Vice  President,  please  submit
evidence of your authority to sign. For joint accounts,  each joint owner should
sign.)



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