Holding(s) in Company

London Stock Exchange Group PLC
20 July 2006


                   NOTIFICATION OF MAJOR INTERESTS IN SHARES



1. Name of company


London Stock Exchange Group plc


2. Name of shareholder having a major interest


Barclays PLC through the legal entities below:                                                    Holding



Barclays Capital Securities Ltd                                                                   629,921

Barclays Global Investors Ltd                                                                   2,175,358

Barclays Global Fund Advisors                                                                     913,463

Barclays Private Bank and Trust Ltd                                                                 1,806

Barclays Global Investors Japan Ltd                                                                17,140

Barclays Global Investors, N.A.                                                                 1,197,849

Barclays Capital Inc                                                                               21,862

Gerrard Ltd                                                                                           375

Barclays Global Investors Japan Trust & Banking                                                   187,739

Barclays Global Investors Canada Ltd                                                               11,631

Barclays Bank PLC                                                                               7,703,601

Barclays Global Investors Australia Ltd                                                            14,474

Barclays Life Assurance Co Ltd                                                                    252,831



3. Please state whether notification indicates that it is in respect of holding
of the shareholder named in 2 above or in respect of a non-beneficial interest
or in the case of an individual holder if it is a holding of that person's
spouse or children under the age of 18



Not disclosed



4. Name of the registered holder(s) and, if more than one holder, the number of
shares held by each of them


Registered Holder                                                                                 Holding

Bank of New York                                                                                   11,339

Barclays Capital Nominees Limited                                                                 254,353

Barclays Capital Nominees Limited                                                                 375,568

Barclays Capital Nominees Limited                                                                  21,862

Barclays Capital Nominees Limited                                                               7,703,601

Barclays Global Investors Canada                                                                   11,631

Boiss Nominees Ltd                                                                                197,901

Chase Nominees Ltd                                                                                105,540

Chase Nominees Ltd                                                                                 73,617

Clydesdale Nominees HGB0225                                                                         1,806

Investors Bank and Trust Co.                                                                        2,597

Investors Bank and Trust Co.                                                                            1

Investors Bank and Trust Co.                                                                            1

Investors Bank and Trust Co.                                                                        1,471

Investors Bank and Trust Co.                                                                       15,613

Investors Bank and Trust Co.                                                                        9,575
Investors Bank and Trust Co.
                                                                                                   17,759
Investors Bank and Trust Co.
                                                                                                  165,504
Investors Bank and Trust Co.
                                                                                                  850,267
Investors Bank and Trust Co.
                                                                                                  846,397
Investors Bank and Trust Co.
                                                                                                   49,735
Investors Bank and Trust Co.
                                                                                                    8,076
Investors Bank and Trust Co.
                                                                                                    5,385
Investors Bank and Trust Co.
                                                                                                   27,226
JP Morgan (BGI Custody)
                                                                                                   58,958
JP Morgan (BGI Custody)
                                                                                                  120,256
JP Morgan (BGI Custody)
                                                                                                1,707,291
JP Morgan (BGI Custody)
                                                                                                  164,626
JP Morgan Chase Bank
                                                                                                    1,749
JP Morgan Chase Bank
                                                                                                    1,424
JP Morgan Chase Bank
                                                                                                    9,804
JP Morgan Chase Bank
                                                                                                    5,691
JP Morgan Chase Bank
                                                                                                   16,697
JP Morgan Chase Bank
                                                                                                   21,930
JP Morgan Chase Bank
                                                                                                   90,539
JP Morgan Chase Bank
                                                                                                   23,326
JP Morgan Chase Bank
                                                                                                    9,430
JP Morgan Chase Bank
                                                                                                    5,142
JP Morgan Chase Bank
                                                                                                   17,477
JP Morgan Chase Bank
                                                                                                    1,597
JP Morgan Chase Bank
                                                                                                    1,601
JP Morgan Chase Bank
                                                                                                   14,474
Mellon Trust - US Custodian /
                                                                                                    6,386
Mitsui Asset
                                                                                                    2,605
R C Greig Nominees Limited GP1
                                                                                                      375
State Street Boston
                                                                                                   88,289
Trust & Custody Services Bank
                                                                                                    1,558



5. Number of shares / amount of stock acquired



Not disclosed


6. Percentage of issued class



Not disclosed


7. Number of shares / amount of stock disposed



Not disclosed


8. Percentage of issued class



Not disclosed


9. Class of security



Ordinary Shares



10. Date of transaction



Not disclosed



11. Date company informed



20 July 2006


12. Total holding following this notification



13,128,050


13. Total percentage holding of issued class following this notification



6.12%


14. Any additional information



N/A


15. Name of contact and telephone number for queries



Lisa Condron, 020 7797 3517


16. Name and signature of authorised company official responsible for making
this notification



Lisa Condron


Date of notification



20 July 2006


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for loss of business or loss of profits) arising in contract, tort or otherwise
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