<PAGE>

                                                                 EXHIBIT 10.58

                         ALLIANCE CAPITAL MANAGEMENT L.P.

                   Discretionary Investment Advisory Agreement

                                      With

                            Platinum Re (UK) Limited

                             Dated November 27,2002
                                (Effective Date)

                  Alliance Capital Management L.P. (the "Adviser") and Platinum
Re (UK) Limited (the "Client") hereby agree as of the above date that the
Adviser shall act as discretionary investment manager with respect to certain
assets of the Client described below (the "Investment Account") on the following
terms and conditions:

         1.       The Investment Account

                  The Investment Account established for the Client refer
collectively to the Collateral Accounts defined in and subject to a certain
Control Agreement by and among the Client, St. Paul Reinsurance Company Limited
and State Street Bank and Trust Company, dated as of November 27, 2002 and
established as a condition of the 100% Quota Share Retrocession Agreement
(Traditional) (the "Quota Share Retrocession Agreement"), by and between the
Client and St. Paul Reinsurance Company Limited, dated as of November 27, 2002,
shall initially consist of cash, cash equivalents, stocks, bonds, and other
securities placed in the Investment Account by the Client or which shall become
part of such Investment Account as a result of transactions.

                  All cash, securities and other assets in the Investment
Account shall be held by such other party as the Client shall designate as
trustee or custodian for such account (each, a "Custodian"). The Adviser shall
not be responsible for any custodial arrangements involving the assets of the
Investment Account or for the payment of any custodial charges and fees, nor
shall the Adviser have possession or custody of any such assets. All payments,
distributions and other transactions in cash, securities or other assets in
respect of the Investment Account shall be made directly to or from the
Custodian for such Investment Account, and the Adviser shall have no
responsibility or liability with respect to transmittal or safekeeping of such
cash, securities or other assets of an Investment Account, or the acts or
omissions of any Custodian or others with respect thereto. The Client may make
additions to or withdrawals from the Investment Account established for it,
provided the Adviser receives at least three (3) business days' prior written
notice of withdrawals. Should the Client fail to provide the Adviser with timely
written notice of any additions to or withdrawals from its Investment Account,
the Adviser shall not be liable for any resulting investment or other loss, if
any, which shall be incurred by or charged to the applicable Investment Account,
as the case may be. The Client agrees to provide or instruct the

<PAGE>

Custodian for its Investment Account to provide to the Adviser such information
as the Adviser may reasonably request as being necessary or appropriate to the
performance of the Adviser's responsibilities to the Client under this
Agreement.

         2.       Services of Adviser

                  By execution of this Agreement, the Adviser accepts its
appointment as investment manager for the Investment Account with full
discretion and agrees to supervise and direct the investments of the Investment
Account in accordance with the written investment objectives, policies and
restrictions of the Client previously furnished to the Adviser as the same may
be amended by the Client from time to time. In the performance of its services,
the Adviser will not be liable for any error in judgment or any acts or
omissions to act except those resulting from the Adviser's negligence, willful
misconduct, malfeasance or material breach of this Agreement. Nothing herein
shall in any way constitute a waiver or limitation of any right of any person
under the Federal securities laws or any state securities laws

                  The Adviser will make available to the Client a daily report
on the positions of each of the investments in the Investment Account and a
monthly written report of the inventory of investments in the Investment Account
established for the Client. It is agreed that the Adviser, in the maintenance of
its records, does not assume responsibility for the accuracy of information
furnished by any Client or any other person.

         3.       Funding Policy

                  The Client shall from time to time inform the Adviser in
writing of the funding policy applicable to it and of its cash disbursement
requirements. The Adviser shall make its investment decisions for an Investment
Account in accordance with such funding policy and requirements.

         4.       Investment Objectives, Policies and Restrictions

                  It will be the responsibility of the Client to notify the
Adviser in writing of the of any modifications to Schedule A. The Client is also
required to notify the Adviser in writing of specific restrictions governing its
Investment Account under the current or future laws of any jurisdiction or by
virtue of the terms of any other contract or instrument purporting to bind the
Client or the Adviser.

         5.       Delivery of Client Documentation

                  No later than the date of this Agreement, the Client will
provide the Adviser with copies of all documents relevant to the Adviser's
management of the Investment Account established for the Client, (i.e. trust
agreement, pension plan documents, by-laws, etc.), including the Client's
written statement of investment objectives, policies and restrictions referred
to above. The Client further agrees to promptly deliver to the Adviser true and
complete copies of

                                       2

<PAGE>

all amendments or supplements to such documents. The Client will indemnify and
hold harmless the Adviser against any and all losses, costs, claims and
liabilities which it may suffer or incur arising out of any failure by the
Client to provide to the Adviser the documents required to be furnished in
accordance with the above provisions.

         6.       Discretionary Authority

                  The Adviser, whenever it deems appropriate may (i) buy, sell,
exchange, convert, liquidate or otherwise trade in any stock, bonds and other
securities (including money market instruments) and contracts relating to the
same, and (ii) subject to its duty to seek best execution, place orders for the
execution of such transactions with or through such brokers, dealers or issuers
as the Adviser in its absolute discretion may select.

                  It is understood that, to the extent permitted by Schedule A,
the Adviser or Alliance Capital Global Derivatives Corporation, an affiliate of
the Adviser, may also effect transactions for the Investment Account of the
Client in options and futures and other commodity contracts. In such event, the
Client will execute any additional documentation which the Adviser deems
necessary to enable it or its affiliate to engage in such transactions on behalf
of its Investment Account. The Client represents and warrants that it is
familiar with the requirements of the Commodity Exchange Act and the National
Futures Association pertaining to commodity pool operators and has determined
that it is in compliance with such requirements, to the extent applicable.

         7.       Brokerage Transactions

                  Fixed-income securities transactions for the Investment
Account will generally be effected in dealer markets where the Adviser will act
as agent for the Client in the purchase or sale of fixed-income securities at a
net price that includes a mark-up from the dealer. The Adviser will issue
instructions to such issuers, brokers and dealers for the placement of orders
for the Investment Account and instruct such dealers to forward to the Client
copies of all confirmations promptly after the execution of transactions for the
Client's Investment Account.

         8.       Aggregation of Transactions

                  The Client authorizes the Adviser in its discretion to
aggregate purchases and sales of securities for its Investment Account with
purchases and sales of securities of the same issuer for other clients of the
Adviser occurring on the same day. When transactions are so aggregated, the
actual prices applicable to the aggregated transactions will be averaged, and
the Investment Account and the accounts of other participating clients of the
Adviser will be deemed to have purchased or sold their proportionate share of
the securities involved at the average price so obtained.

         9.       Transaction Procedures

                  All transactions will be settled by payment to, or delivery
by, the applicable Custodian of all cash, securities or other assets due to or
from the Investment Account. The

                                       3

<PAGE>

Adviser may issue such instructions to a Custodian as may be appropriate in
connection with the settlement of transactions initiated by the Adviser.
Instructions of the Adviser to a Custodian shall be transmitted in writing or,
at the option of the Adviser, orally and confirmed in writing as soon as
practical thereafter. The Adviser will take reasonable measures to insure that
broker-dealers and issuers selected by the Adviser perform their obligations
with respect to the Investment Accounts.

         10.      Fees

                  The compensation of the Adviser for its services under this
Agreement shall be calculated and paid by the Client in respect of the
Investment Account established for it, in accordance with the Fee Schedule
attached hereto as Exhibit A, as the same may be amended from time to time by
mutual agreement between the Client and the Adviser. It is understood that, in
the event that such fees are to be billed to and paid by the Custodian for an
Investment Account, the Client will provide written authorization to the
Custodian to pay the fees of the Adviser directly from the Investment Account.
The Client shall" be responsible solely for the fee due to the Adviser in
respect of the Investment Account established for such Client.

         11.      Confidential Relationship

                  All information provided by the Client or a Custodian to the
Adviser shall be held as confidential by the Adviser; provided, however, as is
necessary to carry out the purposes of this Agreement or as may be required by
law, the Adviser shall be permitted to disclose or communicate to a proper party
any information received from the Client or a Custodian or developed by the
Adviser under the terms of this Agreement. All recommendations, advice and other
work product of the Adviser developed under the terms of this Agreement and
disclosed to the Client or a Custodian shall be held as confidential, except as
required by law. Notwithstanding the foregoing, Client hereby authorizes the
Adviser to disclose through whatever means it deems appropriate (CHECK THE
APPROPRIATE BOXES BELOW):

         PLATINUM RE (UK) LIMITED

         (a) Yes [X]  No [ ] that the Client is an investment management client
                             of the Adviser;

         (b) Yes [X]  No [ ] the type of assets that the Adviser is managing
                             for the Client from time to time(e.g., fixed-income
                             assets); and/or

         (c) Yes [X]  No [ ] solely in the limited context of the Adviser's
                             responses to Request for Proposals ("RFPs"), the
                             Adviser is also authorized by the Client to
                             disclose in such RFPs, the value of the assets
                             managed for the Client by the Adviser from time to
                             time.

If the Client does not check either "yes" or "no" to any of the requested
disclosure authorizations indicated in (a) through (c) above, the Client shall
be deemed to have no objection to the Adviser disclosing the indicated
information. The Client may revoke these authorizations in respect of itself, at
any time by written notice to the Adviser.

                                       4

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         12.      Services to Other Clients

                  It is understood that the Adviser performs investment advisory
services for various clients including investment companies. The Client agrees
that the Adviser may give advice and take action with respect to any of its
other clients which may differ from advice given, or the timing or nature of
action taken, with respect to the Investment Account established for it, so long
as it is the Adviser's policy, to the extent practical, to allocate investment
opportunities to the Investment Account over a period of time on a fair and
equitable basis relative to other clients.

                  Nothing in this Agreement shall limit or restrict the Adviser
or any of its directors, officers, affiliates or employees from buying, selling
or trading in any securities or other assets for its or their own account or
accounts, and the Client acknowledges that the Adviser, its directors, officers,
affiliates and employees, and other clients of the Adviser, may at any time
have, acquire, increase, decrease or dispose of positions in investments which
are at the same time being acquired, held or disposed of for the Investment
Account.

                  The Adviser will not have any obligation to initiate the
purchase or sale, or to recommend for purchase or sale, for the Investment
Account any security or other asset which the Adviser, its directors, officers,
affiliates or employees may purchase, hold or sell for its or their own accounts
or for the accounts of any other clients of the Adviser.

         13.      Non-Public Information

                  The Adviser will have no obligation to purchase or sell for
the Investment Account the securities of any issuer on the basis of any material
non-public information as may come into its possession.

         14.      Representations by the Client

                  The Client represents and warrants as to itself that (i) the
appointment of the Adviser as discretionary investment adviser entitled to give
entitlement orders or other instructions and communications to the Custodian is
authorized by the governing documents (including, but not limited to the Quota
Share Retrocession Agreement and all documents related thereto) relating to the
Investment Account and that the terms of this Agreement do not violate any
provisions thereof or any obligation by which it is bound, whether arising by
contract, operation of law or otherwise; (ii) this Agreement has been duly
authorized by appropriate action and when executed and delivered will be binding
upon it in accordance with its terms; and (iii) it will deliver to the Adviser
such evidence of such authority as the Adviser may reasonably require, whether
by way of a certified resolution or otherwise.

         15.      Representations by Adviser

                  The Adviser represents that (i) it is registered as an
investment adviser under the Investment Advisers Act of 1940, as amended (the
"Advisers Act") and (ii) that it has all other regulatory authority and capacity
to enter into this Agreement and perform its duties hereunder.

                                       5

<PAGE>

         16.      Indemnification

                  The Adviser agrees to indemnify and hold the Client harmless
from any and all expenses, damages, costs and fees, including reasonable
attorney's fees, which may be incurred by reason of the Adviser's negligence,
willful misconduct, malfeasance, material breach of this Agreement or violation
of applicable law.

         17.      Valuation

                  In computing the market value of any security held in the
Investment Account, the Adviser shall value such security through independent,
recognized pricing services utilized by the Adviser for pricing securities held
in its advisory accounts generally. Any other security or asset shall be valued
in a manner determined in good faith by the Adviser to reflect its fair market
value.

         18.      Receipt of Disclosure Statement

                  The Client acknowledges receipt of Part II of the Adviser's
current Form ADV in compliance with Rule 204-3(b) under the Advisers Act more
than forty eight (48) hours prior to the date of execution of this Agreement.

         19.      Notices

                  Unless otherwise specified herein, all notices, instructions
and advice with respect to security transactions or any other matters
contemplated by this Agreement shall be deemed duly given when received by the
Client and the Adviser, as applicable, at their addresses appearing below. In
respect of the Investment Account, the Adviser may rely upon any notice (written
or oral) from any person whom the Adviser reasonably believes to be an
authorized representative of the Client.

         20.      Specimen Signatures

                  The Adviser will forward from time to time to the Client and
the Custodian for the Client's Investment Account, a list of names and specimen
signatures of persons authorized to act on behalf of the Adviser. The Client
will forward to the Adviser a list of names and specimen signatures of persons
authorized to act on behalf of the Client shall cause the Custodian of its
Investment Account to forward a like list and specimen signatures to the
Adviser.

         21.      Invalid Provisions

                  If any provision of this Agreement is held to be illegal,
invalid or unenforceable under present or future law, such provision shall be
fully severable, and this Agreement shall be construed and enforced as if such
illegal, invalid or unenforceable provision had never comprised a part of this
Agreement, and the remaining provisions of this Agreement shall remain in full

                                       6

<PAGE>

force and effect and shall not be affected by the illegal, invalid or
unenforceable provision or its severance from this Agreement.

         22.      Termination; Assignment; Amendment

                  This Agreement may be terminated at any time by the Client in
respect of its Investment Account by giving to the Adviser at least thirty (30)
days* prior written notice of such termination. This Agreement may be terminated
at any time by the Adviser in respect of the Investment Account by giving to the
Client at least thirty (30) days(1) prior written notice of such termination.
Fees paid in advance of the effectiveness of the termination will be prorated to
the date of termination specified in the notice of termination, and any unearned
portion thereof will be refunded to the Client. No assignment, as that term is
defined in the Advisers Act, shall be made by the Adviser without the written
consent of the Client. No assignment shall be deemed to result from changes in
the directors, officers or employees of the Adviser except as may be provided in
the Advisers Act. The Adviser agrees that it will notify the Client of any
change in the membership of the general partners of the Adviser within a
reasonable time after such change. This Agreement may be amended or modified at
any time by mutual agreement of the Client and the Adviser in writing.

         23.      Counterparts

                  This Agreement may be executed in two or more counterparts,
each one of which shall be deemed to be an original.

         24.      Governing Law

                  To the extent Federal law does not apply, this Agreement shall
be construed in accordance with and governed by the laws of the State of New
York.

         25.      Entire Agreement

                  This Agreement constitutes the entire agreement of the parties
with respect to management of the Investment Account.

                                       7

<PAGE>

                  IN WITNESS WHEREOF, the parties hereto have caused this
Agreement to be executed by their respective representatives as of the date
first above written.

                                PLATINUM RE (UK) LIMITED BY:

                                BY: /s/ G. R. Butler
                                      ------------------------------------
                                        Name:  G. R. Butler
                                        Title: FINANCE DIRECTOR

                                ADDRESS:   52 Lime Street
                                           London EC3M TNL
                                           UNITED KINGDOM
                                           Attention: Guy Butler

                                ALLIANCE CAPITAL MANAGEMENT L.P.

                                BY:     Alliance Capital Management
                                        Corporation, its General Partner

                                BY: /s/ Louis T. Mangan
                                      ------------------------------------
                                        Louis T. Mangan
                                        Assistant Secretary

                                ADDRESS:   1345 Avenue of the Americas
                                           New York, New York 10105
                                           Attn: Holly Spencer
                                     cc:   Managing Director,
                                           Institutional Asset Management

                                       8

<PAGE>
                           New Account Documentation
                                      for

                            Platinum Re (UK) Limited


The Adviser will require the documents identified below to establish its
investment management relationship with Platinum Underwriters Bermuda, Ltd.

1.   Fully executed advisory agreement (with fee schedule attached).

2.   Accurate list of securities to be transferred to new account unless
     initially consisting of cash or cash equivalents.

3.   Written statement of investment objectives, guidelines and restrictions, if
     any.

4.   Form W-9/W-8, as applicable.

5.   List of Authorized Signatories.

6.   Certified resolution of the Board of Directors or appropriate Committee
     authorizing appointment of the Adviser as investment adviser.


                                       9

<PAGE>

                                    EXHIBIT A

                        ALLIANCE CAPITAL MANAGEMENT L.P.

            FIXED INCOME INSURANCE ASSET MANAGEMENT FEES PREPARED FOR

                            Platinum Re (UK) Limited

FOR MINIMUM FIXED INCOME ACCOUNT SIZE OF $1 BILLION

<TABLE>
<CAPTION>
 Fee                                      Assets
 ---                                      ------
<S>             <C>                    <C>
0.19%           on the first           $100 million
0.14%           on the next            $150 million
0.11%           on the next            $250 million
0.10%           on the balance
</TABLE>

 FOR FIXED INCOME ASSETS LESS THAN $1 BILLION

<TABLE>
<CAPTION>
 Fee                                      Assets
 ---                                      ------
<S>             <C>                    <C>
0.20%           on the first           $100 million
0.15%           on the next            $150 million
0.12%           on the next            $250 million
0.10%           on the balance
</TABLE>

<PAGE>

                                   SCHEDULE A

                              INVESTMENT GUIDELINES

<PAGE>

                              INVESTMENT GUIDELINES

                            PLATINUM RE (UK) LIMITED
                                ST. PAUL RE (UK)

INVESTMENT OBJECTIVE:

The Fund's assets are managed to provide a high degree of investment income
subject to risk, guidelines, appropriate liquidity considerations, and tax
efficiency.

Other objectives include to maintain or enhance the Platinum Group's
[Financial/Credit] rating and to generate a superior long-term total rate of
return versus a benchmark.

PORTFOLIO DURATION:

The targeted duration of the portfolio will be that of the liability stream,
which Platinum will provide as needed. If no liability stream is available, a
duration target of 3.5 years will apply. The portfolio could deviate as much as
+/- one year away from this target. There is no limitation placed on the
duration of individual securities.

PORTFOLIO CREDIT QUALITY:

The average quality of the managed fund should be no less than A/A2.

<TABLE>
<CAPTION>
                                     SECURITY PARAMETERS:                                                 DIVERSIFICATION
                                                                                                              LIMITS
---------------------------------------------------------------------------------------------------------------------------------
                                                SECURITY:                           RATING:
---------------------------------------------------------------------------------------------------------------------------------
<S>                           <C>                                                  <C>                  <C>
i.  GOVERNMENT                Government securities issued by OECD Governments     AA-/Aa3 or           100% per issuer
                                                                                     better             100% of portfolio
---------------------------------------------------------------------------------------------------------------------------------
ii.   MONEY                   Repurchase and Reverse repurchase agreements                                3% per issuer
      MARKETS                                                                                           100% of portfolio
                              ---------------------------------------------------------------------------------------------------
                              Negotiable Certificates of Deposit and Time          A-/A3 or               3% per issuer
                              Deposits, Demand Notes and Funding Agreements         better              100% of portfolio
                              ---------------------------------------------------------------------------------------------------
                              Commercial paper, including finance company paper    A1/p1 or               3% per issuer
                              and asset-backed commercial paper                     better              100% of portfolio

---------------------------------------------------------------------------------------------------------------------------------
iii.  MORTGAGE                Mortgage backed securities whose collateral is       A/A2 or                5% per issuer
      BACKED                  guaranteed by FNMA, FHLMC or GNMA - agency            better               30% of portfolio
      SECURITIES              mortgage backed securities
      AND                     (pass-throughs and CMOs)
      ASSET-                  ---------------------------------------------------------------------------------------------------
      BACKED                  Asset-backed securities (an asset-backed security    A/A2 or                5% per issuer
      SECURITIES              issued by a discreet master trust will be thought     better               20% of portfolio
                              portfolio of as an individual issuer) - Public
                              and 144a asset-backed securities
                              ---------------------------------------------------------------------------------------------------
                              Publicly issued private label pass-throughs and      A/A2 or                5% per issuer
                              CMOs (excluding I/Os and P/Os)                        better               30% of portfolio
---------------------------------------------------------------------------------------------------------------------------------
</TABLE>

<PAGE>

<TABLE>
---------------------------------------------------------------------------------------------------------------------------------
<S>                           <C>                                                  <C>                  <C>
iv.   COMMERCIAL
      MORTGAGE                Commercial mortgage backed securities (including     A/A2 or                3% per issuer
      BACKED                  REITS)                                                better               10% of portfolio
      SECURITIES
---------------------------------------------------------------------------------------------------------------------------------
v.    MUNICIPAL               Municipal securities, including "general             A-/A3 or               3% per issuer
      BONDS                   obligation" and "revenue" bonds*                      better              100% of portfolio

                                                                                   ----------------------------------------------
                                                                                   Greater than           3% per issuer
                                                                                       BBB-              10% of portfolio
                                                                                   /Baa3,less
                                                                                   than A-/A3

---------------------------------------------------------------------------------------------------------------------------------
vi.   CORPORATE               Notes, debentures, medium term notes or secured      A-/A3 or               3% per issuer
      SECURITIES              securities**                                          better               50% of portfolio

                                                                                   ----------------------------------------------
                                                                                   BBB-/Baa3              3% per issuer
                                                                                   or better             20% of portfolio

                              ---------------------------------------------------------------------------------------------------
                              Credit default swaps (only when the swap {unfunded    A-/A3 or              3% per issuer
                              version} can create more investment income than        better              50% of portfolio
                              the bond for the same reference entity).***

                                                                                   ----------------------------------------------
                                                                                   BBB-/Baa3              3% per issuer
                                                                                   or better             20% of portfolio

---------------------------------------------------------------------------------------------------------------------------------
vii.  PREFERRED               Preferred Stocks including Perpetual, Sinking Fund,  BBB-/Baa3 or         2.5% per issuer
      STOCKS                  Adjustable Rate and Fixed Rate                        better               10% of portfolio

---------------------------------------------------------------------------------------------------------------------------------
viii. SOVEREIGN               Sovereign securities                                 AA-/Aa3 or            50% per issuer
      AND                                                                           better               50% of portfolio
      SUPRANATIONAL
      SECURITIES              ---------------------------------------------------------------------------------------------------
                              Supranational securities                             AA-/Aa3 or            50% per issuer
                                                                                    better               50% of portfolio

---------------------------------------------------------------------------------------------------------------------------------
</TABLE>

The per issuer limitations are a function of the market value of the combined
accounts (US, Bermuda and UK).

The maximum percentage for all securities rated BBB/Baa is 20% of the portfolio.

A maximum of 30% of the portfolio to be invested in iii. Above.

OTHER RESTRICTIONS:

Futures and options are permitted, provided the instrument is used as a hedge,
with specific prior approval from Platinum.

-                 Swaps

-                 Futures

-                 Exchange traded options

-                 Over-the-counter options

Structured securities or securities with embedded options are permitted.
Leverage is not permitted.

In the case of a split rating, the lower of the ratings available shall apply.

Should a security be downgraded below investment grade (BBB-/Baa3) the manager
must notify and consult with Platinum as soon as reasonably practicable,
regarding the optimal timing of the disposal.

<PAGE>

For securities with variable principal repayment, the estimated duration should
be used with respect to the duration restrictions.

All holdings must be denominated in the base currency of the relevant portfolio
(but including legacy currencies in the case of Euros).

WITHHOLDING TAXES:

No investments shall be made that give rise to withholding taxes unless the
after-tax returns are competitive with available returns on which withholding
taxes are not imposed, which will ordinarily only occur where the investor is
able to utilize the withheld taxes as a credit against its domestic income tax
liability. In general investments made with respect to the Bermuda account will,
in the case of securities issued by U.S. issuers, be limited to securities that
are eligible for the " portfolio interest exemption"- i.e., essentially
securities that are in registered form and not issued by a 10% or more
shareholder of Platinum Holdings.

KEY:

*        General obligation bonds are secured by the issuer's pledge of its full
         faith, credit and taxing power for the payment of principal and
         interest. Revenue or special tax bonds are payable only from the
         revenues derived from a particular facility or class of facilities or,
         in some cases, from the proceeds of a special excise or other tax, but
         not from general tax revenues. Municipal bonds will be utilized when
         there is an after-tax benefit to the portfolio.

**       No more than 25% of the portfolio assets can be invested in an
         industry.

***      For Credit Default Swaps, the rating of the reference entity will serve
         as the rating for the Swap.

****