Holding(s) in Company

London Stock Exchange Group PLC
21 November 2006

London Stock Exchange Group plc

21 November 2006

London Stock Exchange Group plc received the following letter from UBS on 21
November 2006.

Pursuant to Section 198 of the Companies Act 1985 we write to inform you that as
at the close of its business on 17 November 2006, UBS AG, acting through its
business group and legal entities detailed below, had an interest in 7,053,824
ordinary shares of London Stock Exchange Group plc, representing 3.30 per cent
of the issued share capital of the Company (213,641,890).


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


UBS AG London Branch                                 5,816,990 shares           2.72%

UBS Global Asset Management Life Limited             333,464 shares             0.16%

UBS AG (Switzerland)                                 903,370 shares             0.42%

UBS AG - Total                                       7,053,824 shares           3.30%





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



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