Transaction in Own Shares

London Stock Exchange Group PLC
13 June 2006

                        London Stock Exchange Group plc


London Stock Exchange announces that on 13 June 2006 it acquired 600,000 of its
own ordinary shares of 6 79/86p each for cancellation at an average price of
1044.981 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