Amvescap PLC

FORM SAR 3


Lodge with a RIS or Newstrack if appropriate and the Takeover Panel.
A copy must also be sent to the company the shares of which are
 acquired.

                                   Date of disclosure 22 DECEMBER 2003

            DISCLOSURE UNDER RULE 3 OF THE RULES GOVERNING
             SUBSTANTIAL ACQUISITIONS OF SHARES ("SARs")

Date of acquisition  19 DECEMBER 2003

Acquisition in (name of company) ... BTG PLC

 (1)Class of voting shares   Number of          If rights over
    (eg ordinary shares)      shares/rights     Shares acquired,
                             over shares        as opposed to the
                              acquired          shares themselves,
                                                specify nature of
                                                rights

    ORDINARY 10P             97,368 shares                -
               -             N/A    rights                -

 (2)Resultant total holding  Resultant total    Total percentage
    of voting shares (and %   holding
    of total voting shares   of rights over
    in issue)                 shares
                             (and % of total
                              voting
                             shares in issue)

      27,398,300 (26.00%)            -           27,398,300 (26.00%)

 (3)Party making disclosure ..... AMVESCAP PLC

 (4)(a) Name of person acquiring shares or rights over shares
               DISCRETIONARY MANAGED CLIENTS OF AMVESCAP
        and, if different, beneficial owner

    (b) Names of any other persons acting by
        agreement or understanding (see SAR 5)


Signed, for and on behalf of the party named in (3) above .. R. CLYDE

(Also print name of signatory) .... ROBERT CLYDE

Telephone and extension number .... 020 7065 3720

Note.    Under SAR 5, the holdings of and acquisitions by persons
 acting
by agreement or understanding must be aggregated and treated as a
holding of or acquisition by one person. Note 3 on SAR 5 requires
persons who must aggregate holdings to disclose certain disposals


For full details of the SARs disclosure requirements, see Rules 3 and 5 of the
SARs. If in doubt, contact the Panel on Takeovers and Mergers, Monitoring
Section. Tel. No: 020 7638 0129. Email:monitoring@disclosure.org.uk