Holding(s) in Company

London Stock Exchange Plc
27 January 2006


London Stock Exchange plc

27 January 2006

London Stock Exchange plc received the following letter from Fidelity
Investments on 27 January 2006

Enclosed are amended notifications of disclosable interests under the U.K.
Companies Act 1985. Please note that while this information details the
disclosable interests of more than one entity, the enclosed disclosure
constitutes separate notifications of interest which have been combined solely
for purposes of clarity and efficiency. It is not intended to indicate that any
of these entities act as a group or in concert with respect to these interests.

These disclosures are made in the interest of conformity with the Companies Act.
The Interest detailed herein was acquired solely for investment purposes. For
disclosure purposes, holdings should be represented as FMR Corp. and its direct
and indirect subsidiaries, and Fidelity International Limited (FIL) and its
direct and indirect subsidiaries, both being non-beneficial holders.

Notifications under Sections 198 to 202 - U.K. Companies Act
     
1.   Company in which shares are held:           London Stock Exchange plc

2.   Notifiable Interest:                        Ordinary Shares
     
(A)  FMR Corp.
     82 Devonshire Street
     Boston, MA 02109

     Parent holding company of Fidelity Management & Research Company (FMRCO), 
     investment manager for US mutual funds, and Fidelity Management Trust 
     Company (FMTC), a US state chartered bank which acts as a trustee or 
     investment manager of various pension and trust accounts. (See Schedule A
     for listing of Registered Shareholders and their holdings).

(B)  Fidelity International Limited (FIL)
     P.O. Box HM 670
     Hamilton HMCX, Bermuda

     Parent holding company for various direct and indirect subsidiaries, 
     including Fidelity Investment Services Ltd. (FISL), Fidelity Gestion 
     (FIGEST), Fidelity Investments Advisory (Korea) Limited (FIA(K)L), Fidelity 
     Investments Management (Hong Kong) Limited (FIMHK), Fidelity Pension 
     Management (FPM), Fidelity Investments Japan (FIJ) and Fidelity Investments
     International (FII), investment managers for various non-US investment 
     companies and institutional clients.
     
3.   The notifiable interests also comprise the notifiable interest of:

     Mr. Edward C. Johnson 3d
     82 Devonshire Street
     Boston, MA 02109

     Principal shareholder of FMR Corp and Fidelity International Limited.

4.   The notifiable interests include interest held on behalf of authorised unit 
     trust schemes in the U.K., notwithstanding the exemption from reporting 
     pursuant to Section 209 (1)(h) of the Companies Act 1985.
     
5.   These notifications of disclosable interests constitute separate 
     notifications of interest in the shares and are combined solely for the 
     purposes of clarity and efficiency. Nothing herein should be taken to 
     indicate that FMR Corp. and its direct and indirect subsidiaries, Fidelity
     International Limited and its direct and indirect subsidiaries or 
     Mr. Edward C. Johnson 3d act as a group or in concert in respect of the 
     disclosed interests, or that they are required to submit these 
     notifications on a joint basis.
     
6.   The disclosable interests arise under section 208 (4) (b) of the Act, 
     namely where a person, not being the registered holder, is entitled to 
     exercise a right conferred by the holding of the shares or to control the 
     exercise of such rights, or under section 203 of the Act respectively.


Schedule A

Security: LONDON STOCK EXCHANGE PLC

Current ownership percentage:                       3.90%

Total Shares Held:                             9,940,773

Shares in issue:                             254,810,770

Change in holidays since last filing:         (2,457,725) ordinary shares


             SHARES HELD   MANAGEMENT     NOMINEE/ REGISTERED NAME
                             COMPANY         

                  56,600      FMRCO       STATE STREET BANK AND TR CO
               9,200,773      FISL        JP MORGAN, BOURNMOUTH
                 118,400      FIL         BROWN BROS HARRIMN LTD LUX
                 565,000      FII         JP MORGAN, BOURNEMOUTH

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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