Completion of Exchange Merger

London Stock Exchange Group PLC
01 October 2007



1 October 2007



                Borsa Italiana and London Stock Exchange Combine

                     Shares in enlarged group begin trading



Borsa Italiana S.p.A. ('Borsa Italiana') and London Stock Exchange Group plc 
('LSEG') have today completed their merger thereby creating the leading
diversified exchange group in Europe and the platform for additional strong
growth on a European and global scale.



Following the listing of an additional 79,449,753 shares in LSEG, the company
has an issued share capital of 279,331,382 with a market value of £4.6bn
(€6.6bn) based on today's opening share price of 1646p.



The combined group is:



  • Europe's leading equities business, with 48 per cent of the FTSEurofirst
    100 by market capitalisation and the most liquid order book by value and
    volume traded;
  • Europe's leading market for electronic trading of ETFs and securitised
    derivatives; and
  • Europe's leading fixed income market, through its interest in MTS.



In addition, the combined group operates the most advanced trading platform of
any exchange and the most efficient post-trade services in Europe.



Commenting on the completion, Clara Furse, Chief Executive, said:



'As the leading diversified exchange group in Europe, we will accelerate growth
through the provision of a better and wider range of products and services to an
increasingly international customer base.  This merger will help us to
crystallise our vision to be the world's capital market.'



Massimo Capuano, Deputy Chief Executive, added:



'The combined group has an exciting future. In addition to continuing the
organic development of our business operations, we are focused on the programme
of integration that will ensure the realisation of merger benefits and the
creation of superior shareholder value.'





                                   - Ends -



Enquiries:


Borsa Italiana                                       London Stock Exchange

Press
Alessandro Pavesi                                    John Wallace
Anna Mascioni                   [phone]     Patrick Humphris                 [phone]
Luca Grassis                    [phone]     James Murgatroyd (Finsbury)      [phone]

Investors                                            Paul Froud                       [phone]





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