Holding(s) in Company

London Stock Exchange Group PLC
14 December 2006


London Stock Exchange Group plc

14 December 2006

London Stock Exchange Group plc received the following letter from UBS on 14
December 2006.

Pursuant to Section 198 of the Companies Act 1985 we write to inform you that as
at the close of its business on 12 December 2006, UBS AG, acting through its
business group and legal entities detailed below, had an interest in 9,089,581
ordinary shares of London Stock Exchange Group plc, representing 4.26 per cent
of the issued share capital of the Company (213,216,890).

19,940 of the Relevant Shares are shares in which UBS AG is interested by virtue
of Section 208(5) of The Act.

UBS business group/legal entity              Breakdown of position held (%)

UBS AG London Branch                         8,068,823 shares            3.78%
UBS Global Asset Management Life Limited     333,464 shares              0.16%
UBS AG (Switzerland)                         687,294 shares              0.32%

UBS AG - Total                               9,089,581 shares            4.26%


London Stock Exchange Group plc, name of contact and telephone number for
queries

Lisa Condron, Company Secretary Tel: [phone]

Name and signature of authorised company official responsible for making this
notification

Lisa Condron, Company Secretary



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