Holding(s) in Company

London Stock Exchange Plc
16 February 2006


London Stock Exchange plc

16 February 2006


London Stock Exchange plc received the following letter from Wellington
Management Company, LLP on 15 February 2006

Wellington Management Company, LLP ("Wellington Management") is registered as an
investment adviser with the United States Securities and Exchange Commission
under section 203 of the Investment Advisors Act of 1940, as amended and acts as
discretionary investment manager on behalf of various separate accounts (the "
Accounts") that hold an interest in share of the Company.  Wellington
Management's interest in the share is as an investment manager, as is mentioned
in Section 205(5) of the Company Act 1985 (the "Act").  The Accounts do not act
as a group nor do they act in concert with respect to the interests in shares.
Wellington Management acquired the interests in shares for the Accounts in its
capacity as discretionary investment manager to, and solely for the benefit of,
the Accounts, and the interests were acquired solely for investment purposes.
The shares are registered in the name of the Accounts or the Account's
custodians or nominess according to their respective holdings.

Wellington Management as discretionary investment manager on behalf of the
Accounts has purchased, in the aggregate, an interest, within the meaning of
Sections 203 and 208 of the Act, in 8,510,900 ordinary shares, or 3.34% of the
shares outstanding of the Company.  Therefore, Wellington Management hereby
gives notice to the Company of such interest in shares, pursuant to the
provisions of Sections 198(1) and 208(4)(B) of the Act.

This notice is given in fulfilment of, and for the express purpose of
discharging the obligations imposed on us by, Sections 198(1) and 208(4)(B) of
the Act and arising out of the circumstances referred to in paragraph 2.


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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