Notice of pre-close update

London Stock Exchange Plc
20 September 2005



20 September 2005


                           LONDON STOCK EXCHANGE plc


                ANNOUNCEMENT OF PRE-CLOSE PERIOD TRADING UPDATE


London Stock Exchange plc will release a pre-close period trading update on 29
September 2005.


Further information is available from:


London Stock Exchange       Paul Froud - Investor Relations        020 7797 1186
                            Lyndal Kennedy - Investor Relations    020 7797 1409
                            John Wallace - Media                   020 7797 1222




                      This information is provided by RNS
            The company news service from the London Stock Exchange