UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                    FORM 10-K

(MARK ONE)
[X]  ANNUAL REPORT  PURSUANT TO SECTION 13 OR 15(d) OF THE  SECURITIES  EXCHANGE
     ACT OF1934

For the fiscal period ended December 31, 2003

OR

[ ]  TRANSITION  REPORT  PURSUANT  TO SECTION  13 OR 15(d) OF THE  SECURITIES
     EXCHANGE ACT OF 1934 [NO FEE REQUIRED]

Commission file number: 333-108537

                INTERSTAR SECURITISATION MANAGEMENT PTY LIMITED
   in its capacity as manager of the Interstar Millennium Series 2003-5G Trust
                               ABN 37 663 648 829
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             (Exact name of Registrant as specified in its charter)

                           VICTORIA, AUSTRALIA
           ----------------------------------------------------------
                 (State or Other Jurisdiction of Incorporation)

                                       N/A
           ----------------------------------------------------------
                       (I.R.S Employer Identification No.)

        LEVEL 10, 101 COLLINS STREET, MELBOURNE, VICTORIA 3000, AUSTRALIA
        -----------------------------------------------------------------
                    (Address of principal executive offices)

                              (0011) 613 9612 1111
               ---------------------------------------------------
              (Registrant's Telephone Number, Including Area Code)

SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT:
None

SECURITIES REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT:
None.

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the  preceding 12 months (or for such  shorter  period that the  registrant  was
required  to file  such  reports),  and  (2) has  been  subject  to such  filing
requirements for the last 90 days.
Yes [x] No [ ]

Indicate by check mark if disclosure of delinquent  filers  pursuant to Item 405
of Regulation  S-K is not contained  herein,  and will not be contained,  to the
best of registrant's  knowledge,  in definitive proxy or information  statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K. (X)
           ---

Indicate  by check mark  whether  the  registrant  is an  accelerated  filer (as
defined in Exchange Act rule 12b-2). Yes_____ No___X___

State the aggregate market value of the voting and non-voting common equity held
by  nonaffiliates  computed by reference to the price at which the common equity
was last sold, or the average bid and asked price of such common  equity,  as of
the last business day of the registrant's most recently  completed second fiscal
quarter. Not Applicable


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                                TABLE OF CONTENTS

PART 1       ..................................................................4
ITEM 1.      BUSINESS..........................................................4
ITEM 2.      PROPERTIES........................................................4
ITEM 3.      LEGAL PROCEEDINGS.................................................4
ITEM 4.      SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS...............4

PART II .......................................................................4
ITEM 5.      MARKET FOR REGISTRANT'S  COMMON EQUITY,  RELATED STOCKHOLDER
             MATTERS AND ISSUER  PURCHASES  OF  EQUITY  SECURITIES.............4
ITEM  6.     SELECTED  FINANCIAL DATA..........................................5
ITEM 7.      MANAGEMENT'S  DISCUSSION  AND ANALYSIS OF FINANCIAL  CONDITION AND
             RESULTS  OF OPERATIONS............................................5
ITEM 7A.     QUANTITATIVE  AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.......5
ITEM 8.      FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA.......................6
ITEM 9.      CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
             FINANCIAL DISCLOSURE..............................................6

PART III     ..................................................................7
ITEM 10.     DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT................7
ITEM 11.     EXECUTIVE COMPENSATION............................................7
ITEM 12.     SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT
             AND RELATED STOCKHOLDER MATTERS...................................7
ITEM 13.     CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS....................7
ITEM 14.     PRINCIPAL ACCOUNTANT FEES AND SERVICES............................7

PART IV      ..................................................................8
ITEM 15.     EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND REPORTS ON FORM 6-K..8


                                       2





                                INTRODUCTORY NOTE


The information  required for some items in Form 10-K is "not applicable" to the
Trust or the Manager.  As used in this Annual  Report  filed on Form 10-K,  "not
applicable" or "Not  Applicable"  means that the response to the referenced item
is omitted in reliance on the procedures  outlined in numerous no-action letters
issued  by  the  Commission's  Staff  with  respect  to  substantially   similar
securities and trusts that file annual reports on Form 10-K.


                                       3





                                     PART I

ITEM 1.  BUSINESS

This  Annual  Report on Form 10-K  relates to the  Interstar  Millennium  Series
2003-5G  Trust  (the  "Trust")  and the  Class A2 and Class B1  Mortgage  Backed
Floating Rate Notes (the "Notes")  issued  pursuant to the Note Trust Deed dated
as of October 23,  2003 (the "Note  Trust  Deed"),  between  Perpetual  Trustees
Victoria  Limited,   the  issuer  trustee  (the  "Issuer  Trustee");   Interstar
Securitisation  Management Pty Ltd (the "Manager"),  as Manager; and The Bank of
New York, as note trustee (the "Note Trustee").  Capitalised  terms used in this
Form 10-K and not defined have the same meanings given to them in the Prospectus
and Series Notice relating to the Notes.

The only business of the Trust is the collection and distribution of payments on
the  residential  mortgage  loans in the manner  described  in the  Registration
Statement on Form S-11 (File No.  333-108537)  (the  "Registration  Statement").
Accordingly,  there is no relevant information to report in response to Item 101
of Regulation S-K.

ITEM 2.  PROPERTIES

The registrant and the Trust do not own any physical properties.

ITEM 3.  LEGAL PROCEEDINGS

The Manager knows of no material legal  proceedings  involving any of the Trust,
the Manager, the Servicer or the Issuer Trustee.

ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

No votes or consents of Noteholders  were  solicited  during the fiscal year for
any purpose.

                                     PART II

ITEM 5.  MARKET FOR REGISTRANT'S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND
         ISSUER PURCHASES OF EQUITY SECURITIES

The Notes are not traded on any  nationally  recognized  exchange  in the United
States.

The Notes are currently  represented by  certificates  registered in the name of
Cede & Co., the nominee of The Depository  Trust Company  ("DTC").  Accordingly,
Cede & Co. is the sole  holder of record of the Notes,  which it holds on behalf
of brokers, dealers, banks and other direct participants in the DTC system.

The trust pays no dividends with respect to the Notes, the information  required
by Item 201(c) of Regulation  S-K  regarding  dividends is  inapplicable  to the
Trust.


                                       4





ITEM 6.  SELECTED FINANCIAL DATA

The Notes were issued on October 28,  2003,  with the first  payment  date being
January  20,  2004.  The first  quarterly  Noteholders  Report was filed for the
January 20, 2004 payment date on Form 6-K in respect of the Trust under  Central
Index  Key  0001174852.   As  a  result,  no  financial   information  has  been
incorporated in this 10-K filing.

Due to the limited business  activity of the Trust, the Selected  Financial Data
in Item 301 of  Regulation  S-K  would not  provide  any  meaningful  additional
information.

ITEM 7.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
         OF OPERATIONS

Because of the limited  business  activity  of the Trust,  the  presentation  of
Management's  Discussion  and  Analysis of  Financial  Condition  and Results of
Operations,  as otherwise would be required by Item 303 of Regulation S-K, would
not be  meaningful.  All relevant  information  is  contained  in the  quarterly
servicing reports (filed under Current Reports on Form 6-K) as described above.

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Currency Exchange Control Risk
- ------------------------------
Interest  and  principal  payments  to  holders  of the Notes are paid in United
States dollars  ("U.S.  dollars").  However  payments on the mortgage loans (the
"Collections")  are received by the Issuer Trustee,  in Australian  dollars,  in
Australia.  Pursuant to certain swap agreements  ("Currency Swaps"),  the Issuer
Trustee  is  required  to pay a  portion  of the  Collections  to  certain  swap
counterparties  (the "Currency Swap  Providers") who in turn pay ("Swap Currency
Exchange"),  at the direction of the Issuer Trustee, U.S. dollars to the holders
of the Notes.  It is possible that in the future,  Australia may impose exchange
controls that affect the  availability of Australian  dollar payments for making
payments under the Currency  Swaps.  The holders of the Notes will bear the risk
of the imposition of foreign exchange controls by the Australian government that
impact upon the Issuer  Trustee's  ability to exchange the  Collections for U.S.
dollars.

The Issuer  Trustee  has no  control  over such risk,  which will  generally  be
affected by economic and political  events in Australia.  If the Issuer  Trustee
does  not pay  some or all of the  amount  in  Australian  dollars  which  it is
required to pay the  Currency  Swap  Providers  under the  Currency  Swaps,  the
Currency Swap Providers are only required to pay the U.S.  dollar  equivalent of
the amounts they actually receive.  In such event, it is unlikely that the Trust
would have sufficient U.S. dollars to make the payments due on the Notes.


                                       5





The specific prior approval of the Reserve Bank of Australia or the Minister for
Foreign Affairs of the Commonwealth of Australia must be obtained for certain
transactions involving or connected with individuals or entities listed in the
relevant Commonwealth Government Gazette as persons or entities identified with
terrorism or to which financial sanctions apply, including:
o    certain Yugoslav entities or individuals;
o    Jemaah  Islamiah;
o    the Government of Zimbabwe,  any public  authority or controlled  entity of
     the Government of Zimbabwe and certain other individuals  identified by the
     Reserve Bank of Australia;
o    the  Taliban  (also  known as the Islamic  Emirate of  Afghanistan)  or any
     undertaking owned or controlled, directly or indirectly, by the Taliban;
o    Osama bin Laden, the Al-Qaeda  organization  and certain other  individuals
     identified  by the Reserve Bank of Australia as being linked to  terrorism;
     and
o    the  persons  whose  names are  published  in the  Commonwealth  Government
     Gazette  Gn42 as  amended  by  Commonwealth  Government  Gazette  Gn37  and
     Commonwealth  Government  Gazette  Gn49,  and the  persons  whose names are
     listed  under  the  Suppression  of the  Financing  of  Terrorism  Act 2002
     (Commonwealth).

Currency Exchange Rate Risk
- ---------------------------
Interest and principal on the Notes are payable in U.S.  dollars and the Trust's
primary  source for funding its payments on the Notes is its  Collections on the
mortgage  loans,  which will be sourced in Australian  dollars.  If the Currency
Swap  Providers  were to fail to perform under the Currency  Swaps or were to be
discharged from such performance  because of a default  thereunder by the Trust,
the Trust might have to exchange its Australian  dollars for U.S.  dollars at an
exchange rate that is less  favorable to the Trust than when the Currency  Swaps
were entered into and might therefore not have  sufficient U.S.  dollars to make
timely payments on the Notes, even though the delinquency and loss experience on
the mortgage loans may be acceptable.

ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

As discussed above,  furnishing the financial  information required by Item 8 of
Form  10-K  would  not add any  relevant  information  to that  provided  by the
foregoing   statements.   Because  the  Notes  are  essentially   "pass-through"
securities, the Trust will have "income" only in the limited sense of collecting
payments on the mortgage  loans.  The only  material  items of "expense" for the
Trust will be the amounts paid as servicing compensation, and coupon interest to
investors.  The quarterly  Noteholder  reports  (filed on Form 6-K) disclose the
amount of "income" and "expenses" of the Trust.

ITEM 9.  CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
         FINANCIAL DISCLOSURE

There were no disagreements on accounting disclosures.


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                                    PART III

ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

The Trust has no directors or executive  officers.  Therefore,  this item is not
applicable.

ITEM 11. EXECUTIVE COMPENSATION

The Trust has no directors or executive  officers.  Therefore,  this item is not
applicable.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND
         RELATED STOCKHOLDER MATTERS

All of the Noteholders  maintained their security positions with DTC. While some
of the  Noteholders'  security  positions  in the  Trust  may  exceed  5% of the
outstanding  amount of the Notes, such Notes do not constitute voting securities
within the meaning of Item 403 of Regulation S-K.

As at the  date of  this  report,  none  of the  officers  or  directors  of the
Registrant owns a beneficial interest in either the Trust, or in the Registrant.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

Interstar  Securitisation  Management  Pty Ltd is a wholly owned  subsidiary  of
Interstar Securities (Australia) Pty Ltd. Its principal business activity is the
management of securitisation  trusts established under the Interstar  Millennium
Trust Programmes.

Interstar  Securities  (Australia) Pty Ltd acts as servicer (the  "Servicer") to
the Trust. The servicer receives a servicer fee direct from the Trust.

The  Servicer  is a wholly  owned  direct  subsidiary  of  Interstar  Securities
Holdings Pty Limited  ("Interstar  Holdings").  All shares in Interstar Holdings
are  ultimately  owned  (effective  September 29, 2003) by Challenger  Financial
Services  Group  Limited,  a  public  company  listed  on the  Australian  Stock
Exchange.

The Manager has  entered  into an  arrangement  with the  Servicer,  whereby the
Servicer  provides  services  and  various  facilities  to the Trust  Manager on
commercial terms, in order for the Manager to carry out its functions as manager
under the securitization  trusts.  Interstar  Securitisation  Management Pty Ltd
pays management fees to the Servicer.

ITEM 14. PRINCIPAL ACCOUNTANT FEES AND SERVICES

Asset-Backed  Issuers are not required to disclose the  information  required by
this item.



                                       7





                                     PART IV

ITEM 15. EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND REPORTS ON FORM 6-K

(a) (1) and (2):

As noted in Item 6, the Notes were  issued on October 28,  2003,  with the first
payment date being January 20, 2004. The first quarterly  Noteholders report was
filed for the January 20, 2003  payment date on Form 6-K in respect of the Trust
under Central Index Key 0001174852. As a result there are no aggregate totals to
incorporate as an Exhibit. A copy of the Officer's  Certificate of Compliance is
attached hereto as Exhibit No. 99.2.

(a) (3) EXHIBITS:

- --------------------------------------------------------------------------------
Designation                            Description              Method of Filing
- --------------------------------------------------------------------------------

Exhibit 31.1    Section 302 Certification                       31.1
Exhibit 99.1    Independent  Auditor's Annual Servicer          99.1
                Compliance Certificate
Exhibit 99.2    Officer's Certificate of Compliance             99.2
Exhibit 99.3    Servicer's Certificate of Compliance            99.3
- --------------------------------------------------------------------------------


                                       8




                                   SIGNATURES

Pursuant to the  requirements of Section 13 or 15(d) of the Securities  Exchange
Act of 1934,  the  registrant  has duly  caused  this report to be signed on its
behalf by the undersigned, thereunto duly authorized.

INTERSTAR SECURITISATION MANAGEMENT PTY LIMITED



/s/ Sam Kyriacou
- -------------------------
Name: Sam Kyriacou
Title: Director
Date: October 13, 2004





                                       9





                                INDEX TO EXHIBITS


EXHIBIT NO.     DOCUMENT DESCRIPTION
- --------------------------------------------------------------------------------
31.1            Section 302 Certification
99.1            Independent Auditor's Annual Servicer Compliance Certificate
99.2            Officer's Certificate of Compliance
99.3            Servicer's Certificate of Compliance



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