Transaction in Own Shares

London Stock Exchange Group PLC
13 February 2007


                        London Stock Exchange Group plc



London Stock Exchange announces that on 13 February 2007 it acquired 204,761of
its own ordinary shares of 6 79/86p each for cancellation at an average price of
1272.3113 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