Supplementary Prospectus

IG Group Holdings plc
28 April 2005


28 April 2005

IG Group Holdings plc

Supplementary Prospectus in relation to the Global Offer of 183,269,054 Ordinary
Shares of 0.005 pence each at a price of 120 pence per Ordinary Share.

A copy of the supplementary prospectus has been submitted today to the UK
Listing Authority, and will shortly be available for inspection by the public
during normal business hours any weekday (Saturdays, Sundays and public holidays
excepted) at the UK Listing Authority's Document Viewing Facility, which is
situated at:

Financial Services Authority
25 The North Colonnade
Canary Wharf
London E14 5HS
Tel. no. [phone]

(Documents will usually be available for inspection within six normal business
hours of this notice being given).

For further information please contact:

Financial Dynamics                        [phone]

Robert Bailhache
Ed Gascoigne-Pees

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 in
IG is made by means of the prospectus dated 13 April 2005 and relating to IG and
any acquisition of ordinary shares in IG should be made solely on the basis of
the information contained in that document and any supplement thereto. The price
and value of shares can go down as well as up. Persons needing advice should
consult a professional adviser.

UBS Limited, 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 Limited, 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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