Transaction in Own Shares

London Stock Exchange Group PLC
27 April 2007



                        London Stock Exchange Group plc


London Stock Exchange announces that on 27 April 2007 it acquired 122,241 of its
own ordinary shares of 6 79/86p each for cancellation at a price of 1246.7602
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