Transaction in Own Shares

London Stock Exchange Group PLC
25 June 2007



                        London Stock Exchange Group plc



London Stock Exchange announces that on 25 June 2007 it acquired 52,000 of its
own ordinary shares of 6 79/86p each for cancellation at a price of 1326.4302
pence per share.

Further information is available from:


London Stock Exchange      John Wallace - Media              020 7797 1222
                           Paul Froud - Investor Relations   020 7797 3322






                      This information is provided by RNS
            The company news service from the London Stock Exchange