Holding(s) in Company

London Stock Exchange Group PLC
22 December 2006

London Stock Exchange Group plc



22 December 2006



London Stock Exchange Group plc received the following letter from Credit Suisse
on 21 December 2006.



This notification relates to the ordinary shares of the Company ('the shares')
and is given in fulfilment of the obligations imposed under section 198 of the
Companies Act 1985 ('the Act').



We hereby notify you that on 18 December 2006, following disposals, the Credit
Suisse ('CS') companies listed below (together the 'CS companies') held the
following interests in the issued share capital of the Company:



 1. Credit Suisse Securities (Europe) Limited ('CSSEL') 10,855,012 shares.  CSSEL
    held an interest in 258,627 of these shares under section 208(5) of the act
    by virtue of the right to redelivery of equivalent securities under stock
    lending arrangements.



 2. Credit Suisse International ('CSi'): 319,427



The CS companies now hold a total interest of 11,174,439 shares being equivalent
to approximately 5.24% of the issued share capital of the Company.



Those Credit Suisse companies which are direct or indirect holding companies of
CSSEL and CSi are, under the terms of section 203 of the Act, each interested by
attribution in any shares in which CSSEL and CSi are interested.



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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