Transaction in Own Shares

London Stock Exchange Group PLC
20 February 2008

                        London Stock Exchange Group plc

London Stock Exchange announces that on 20 February 2008 it acquired 480,000 of
its own ordinary shares of 6 79/86p each for cancellation at a price of
1530.6860 pence per share.

Further information is available from:

London Stock Exchange       Patrick Humphris - 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