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Amvescap PLC

DISCLOSURE OF ACQUISITIONS

(Rule 3 of The Rules Governing Substantial Acquisitions of Shares)


Name of acquirer AMVESCAP PLC
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Beneficial owner, if different from above DISCRETIONARY MANAGED CLIENTS OF AMVESCAP

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Names of any other persons acting by
agreement or understanding (see SAR 5)
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Company dealt in RINGPROP PLC
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Class of voting shares (eg ordinary shares) ORDINARY 10P
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Date of acquisition 16 DECEMBER 2005
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Number of shares acquired 300,000
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Number of rights over shares acquired #
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Nature of rights over shares
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Total holding of voting shares (and
percentage of total voting shares in issue) 1,245,000 (15.41%)
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Total holding of rights over shares (and
percentage of total voting shares in issue)
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Combined total holding (and percentage) of
voting shares and rights over shares 1,245,000 (15.41%)
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Date of disclosure 19 DECEMBER 2005
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Contact name ON BEHALF OF AMVESCAP PLC
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Telephone number 020 7065 4000
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# See the definition of "rights over shares" in the Definitions Section of the
SARs.

For details of the SARs disclosure requirements, see SARs 3 and 5 and their
Notes which can be viewed on the Takeover Panel's website at
www.thetakeoverpanel.org.uk.
For more information and to contact AFX: www.afxnews.com and
www.afxpress.com