SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 6-K

                        REPORT OF FOREIGN PRIVATE ISSUER
                      Pursuant to Rule 13a-16 or 15d-16 of
                       the Securities Exchange Act of 1934

                         For the month of October, 2002
                                          -------------

                                  AMVESCAP PLC
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                 (Translation of registrant's name into English)

                 11 Devonshire Square, London EC2M 4YR, ENGLAND
           --------------------------------------------------------
                    (Address of principal executive offices)


[Indicate by check mark whether the registrant files or will file annual reports
under cover Form 20-F or Form 40-F.

                        Form 20-F  X             Form 40-F
                                 -----                    -----


[Indicate by check mark whether registrant by furnishing the Information
contained in this Form is also thereby furnishing the information to the
Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934

                                  Yes        No  X
                                      ----      ----


[If "Yes" is marked, indicate below the file number assigned to the registrant
in connection with Rule 12g3-2(b): 82-          N/A
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Description of document filed:  AMVESCAP GLOBAL STOCK PLAN PURCHASED 800,000
                                --------------------------------------------
                                ORDINARY SHARES
                                ---------------


AMVESCAP PLC
227819
IMMEDIATE RELEASE  31 OCTOBER 2002





In accordance with Chapter 16.13 of the Listing Rules, notification is hereby
given that on the 30 October 2002 the Trustee of the AMVESCAP Global Stock Plan
("the Plan") purchased 800,000 ordinary shares of AMVESCAP PLC at
(pound)3.896314. The Company was notified of this purchase on 31 October 2002.

Shares held by the Trust are used in connection with the AMVESCAP Global Stock
Plan, which is established to provide deferred share incentive arrangements to
selected employees of the AMVESCAP group of companies world-wide. The Directors
of the Company are deemed to be considered interested in all of the Shares held
by the Trustees.





31 OCTOBER 2002.



                                  SIGNATURES
Pursuant to the requirements 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.



                                                AMVESCAP PLC
                                        ------------------------------
                                                (Registrant)



Date 31 October, 2002                 By  /s/  ANGELA TULLY
     ----------------                     --------------------------
                                                (Signature)

                                             Angela Tully
                                             Assistant Company Secretary