U.S. Securities and Exchange Commission

                             Washington, D.C. 20549

                                    FORM F-N

                   APPOINTMENT OF AGENT FOR SERVICE OF PROCESS
                     BY FOREIGN BANKS AND FOREIGN INSURANCE
                COMPANIES AND CERTAIN OF THEIR HOLDING COMPANIES
                AND FINANCE SUBSIDIARIES MAKING PUBLIC OFFERINGS
                       OF SECURITIES IN THE UNITED STATES


A.    Name of issuer or person filing ("Filer"): Platinum Underwriters Holdings,
                                                --------------------------------
      Ltd.
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B.    This is (select one):

      |X|   an original filing for the Filer

      |_|   an amended filing for the Filer

C.    Identify the filing in conjunction with which this Form is being filed:

      Name of registrant: Platinum Underwriters Holdings, Ltd.
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      Form type: S-1
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      File Number (if known) Nos. 333-99019, 333-99019-01
                            ----------------------------------------------------

      Filed by: Platinum Underwriters Holdings, Ltd. and Platinum
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      Underwriters Finance, Inc.
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      Date Filed (if filed concurrently, so indicate): August 30, 2002
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D.    The Filer is incorporated or organized under the laws of (Name of the
      jurisdiction under whose laws the filer is organized or incorporated)

      Bermuda
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      and has its principal place of business at (Address in full and telephone
      number)

      Clarendon House, 2 Church Street, Hamilton, Bermuda  HM11, 1-441-295-5950
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E.    The Filer designates and appoints (Name of United States person serving as
      agent)

      CT CORPORATION SYSTEM ("Agent") located at (Address in full in the United
      States and telephone number) 111 Eighth Avenue, 13th Floor, New York,
                                  ----------------------------------------------
      New York 10011, (212) 894-8940
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      as the agent of the Filer upon whom may be served any process, pleadings,
      subpoenas, or other papers in:

      (a)   any investigation or administrative proceeding conducted by the
            Commission, and

      (b)   any civil suit or action brought against the Filer or to which the
            Filer has been joined as defendant or respondent in any appropriate
            court in any place subject to the jurisdiction of any state or of
            the United States or any of its territories or possessions or of the
            District of Columbia,

      arising out of or based on any offering made or purported to be made in
      connection with the securities registered by the Filer on Form (Name of
      Form) S-1 filed on (Date) AUGUST 30, 2002 or any purchases or sales of any
      security in connection therewith. The Filer stipulates and agrees that any
      such civil suit or action or administrative proceeding may be commenced by
      the service of process upon, and that service of an administrative
      subpoena shall be effected by service upon, such agent for service of
      process, and that the service as aforesaid shall be taken and held in all
      courts and administrative tribunals to be valid and binding as if personal
      service thereof had been made.

F.    Each person filing this Form stipulates and agrees to appoint a successor
      agent for service of process and file an amended Form F-N if the Filer
      discharges the Agent or the Agent is unwilling or unable to accept service
      on behalf of the Filer at any time until six years have elapsed from the
      date of the Filer's last registration statement or report, or amendment to
      any such registration statement or report, filed with the Commission under
      the Securities Act of 1933 or Securities Exchange Act of 1934. Filer
      further undertakes to advise the Commission promptly of any change to the
      Agent's name or address during the




      applicable period by amendment of this form referencing the file number
      of the relevant registration form in conjunction with which the amendment
      is being filed.

G.    Each person filing this form undertakes to make available, in person or by
      telephone, representatives to respond to inquiries made by the Commission
      staff, and to furnish promptly, when requested to do so by the Commission
      staff, information relating to the securities registered pursuant to the
      form referenced in paragraph E or transactions in said securities.

      The Filer certifies that is has duly caused this power of attorney,
      consent, stipulation and agreement to be signed on its behalf by the
      undersigned, thereunto duly authorized, in the

      City of Dublin       Country of Ireland
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      this 13th day of SEPTEMBER   , 2002 A.D.
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      Filer: Platinum Underwriters Holdings, Ltd.   By (Signature and Title):


                                                    /s/ Jerome T. Fadden
                                                    ----------------------------
                                                    President & Chief
                                                    Executive Officer

This statement has been signed by the following persons in the capacities and on
the dates indicated.

                                       CT CORPORATION SYSTEM


                                       (Signature) /s/ Sindy Kelsick
                                                   -----------------

                                       (Title) Team Leader
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                                       (Date) September 17, 2002
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