Overallotment exercise

IG Group Holdings plc
03 June 2005



3 June 2005

IG Group Holdings plc

        THIS ANNOUNCEMENT IS NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION
            IN OR INTO THE UNITED STATES, CANADA, AUSTRALIA OR JAPAN

IG Group Holdings plc ('IG'), announces that in relation to the Global Offer of
Ordinary Shares of 0.005p each, UBS Limited ('UBS') has given notice of the
exercise of the Overallotment Option in respect of 7,950,659 Ordinary Shares,
taking the total number of Ordinary Shares sold pursuant to the Global Offer to
191,219,713. As a result of the exercise of the Overallotment Option, net
proceeds of approximately £9.5 million are receivable by the institutional
investors that provided the Overallotment Option. IG will receive none of the
net proceeds arising from the exercise of the Overallotment Option.

Terms used in this announcement have the same meanings as defined in IG's price
range prospectus dated 13 April 2005 and the supplementary prospectus dated 28
April 2005, as appropriate.

This document does not constitute, and should not be construed as, an offer to
sell or the solicitation or inducement of an offer to buy ordinary shares in IG.
Any offer, solicitation of an offer or invitation to acquire Ordinary Shares is
made by means of the prospectus dated 13 April 2005 and the supplementary
prospectus dated 28 April 2005 each relating to IG and any acquisition of
Ordinary Shares should be made solely on the basis of the information contained
in those documents and any supplements thereto. The price and value of shares
can go down as well as up. Persons needing advice should consult a professional
adviser.

UBS, Bridgewell Limited, Numis Securities Limited and Lexicon Partners Limited
are acting for IG and for no one else in connection with the offer of shares in
IG and none of UBS, Bridgewell Limited, Numis Securities Limited or Lexicon
Partners Limited will be responsible to anyone other than IG for providing the
protections afforded to their respective clients or for providing advice in
relation to the offer of shares in IG or any other matter referred to herein.

This document, and any materials attached hereto, are not an offer of securities
for sale in the United States. The shares in IG are not being registered under
the US Securities Act of 1933, as amended (the 'Securities Act') and may not be
offered or sold in the United States (as such term is defined in Regulation S
under the Securities Act) unless they are registered or exempt from
registration. No public offering of the shares in IG is being made in the United
States. This document is not for distribution in or into the United States,
Canada, Australia or Japan. No money, securities or other consideration is being
solicited by this document or any materials attached hereto or the information
they contain in the United States or any other jurisdiction in which such offer
is not authorised or to any person to whom it is unlawful to make such an offer
or invitation.

Stabilisation/FSA




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