Transaction in Own Shares

London Stock Exchange Group PLC
27 March 2007

                        London Stock Exchange Group plc



London Stock Exchange announces that on 27 March 2007 it acquired 145,000 of its
own ordinary shares of 6 79/86p each for cancellation at a price of 1273.6012
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