Holding(s) in Company

London Stock Exchange Group PLC
16 May 2006

London Stock Exchange plc



16 May 2006



London Stock Exchange plc received the following letter from Credit Suisse First
Boston on 16 May 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 12 May 2006, following acquisitions, 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") 17,969,401
   shares.  CSSEL held an interest in 94,536 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") 70,847 shares.



The CS companies now hold a total interest of 18,040,248 shares being equivalent
to approximately 7.04% 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 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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