EDX London Start of Trading

London Stock Exchange Plc
27 June 2003

                                                                    27 June 2003


                 EDX LONDON TO BEGIN TRADING 30 JUNE 2003


EDX London, a new equity derivatives business jointly owned by London Stock
Exchange plc and OM AB, will begin trading Scandinavian equity derivatives on
Monday 30 June 2003. Completion follows EDX London's approval as a Recognised
Investment Exchange by the Financial Services Authority.

EDX London will pay OM a consideration of up to £24.0 million for the transfer
of the Scandinavian equity derivatives business of OM London Exchange. An
initial payment of £12.8 million will be paid on completion, with an additional
payment of up to £11.2 million payable on achievement of certain revenue targets
by EDX London by 31 December 2005.

London Stock Exchange holds a 76 per cent controlling stake in the new company
and OM holds a 24 per cent interest through its subsidiary Stockholmsborsen AB.
Investment in EDX London will be pro rata.



For more information please contact:

LSE       John Wallace            Media                    [phone]
          Paul Froud              Investor Relations       [phone]

OM        Anna Eriksson           Media                    [phone]
          Jakob Hakanson          Investor Relations       [phone]



Notes to editors:


OM London Exchange, which will continue to own and operate UK Power Exchange
(UKPX), will continue to operate as a subsidiary of OM.


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