Holding(s) in Company

London Stock Exchange Plc
17 August 2004


London Stock Exchange plc

17 August 2004

London Stock Exchange plc received the following letter from Fidelity
Investments on 17 August 2004

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) and Fidelity Pension 
     Management (FPM), investment managers for various non-US investment 
     companies and institutional clients. (See Schedule A for listing of 
     Registered Shareholders and their holdings.)
     
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

                   Shares Held   Management 
(Ordinary Shares)                 Company    Nominee/Registered Name     
                        31,485      FIL      Bank of New York Brussels Total
                        64,128      FIL      Bank of New York Brussels Total
                       676,732      FIL      Chase Manhattan Bank London Total
                        57,557      FIL      Deutsche Bank Total
                       396,228      FIL      Deutsche Bank Total
                        45,000      FIL      HSBC Client Holdings Nominee (UK) 
                                             Limited
                                             Total
                       499,528      FIL      JP Morgan Total
                        34,742      FIL      Mellon Nominees Ltd Total
                       109,828      FIL      Northern Trust Total
                        95,583      FIL      Northern Trust London Total
                       522,285      FISL     Chase Manhattan Bank London Total
                    10,119,945      FISL     Clydesdale Bank (Head Office) 
                                             Nominees Limited Total
                     1,407,995      FMRCO    Chase Nominees Limited Total
                         8,485      FMRCO    HSBC Total
                       354,704      FMRCO    State Street Bank & Trust Company 
                                             Total
                       215,469      FMRCO    State Street Nominees Limited Total
                        51,928      FMTC     State Street Bank & Trust Total
                         1,792      FPM      BBH Total
                       227,894      FPM      Chase Nominees Ltd Total
                       323,400      FPM      HSBC Client Holdings Nominee (UK) 
                                              Limited Total
                    15,244,708               Grand Total Ordinary Shares
Current ownership         5.99%
percentage:

Shares in issue:   254,571,428

Change in holdings  (1,199,829) ordinary shares
since last filing:


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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