Holding(s) in Company

London Stock Exchange Group PLC
10 January 2007

                   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



Gerrard Ltd                                                                                           375

Barclays Private Bank and Trust Ltd                                                                 1,806

Barclays Global Investors Ltd                                                                   2,173,532

Barclays Global Investors Japan Ltd                                                                13,824

Barclays Global Investors, N.A.                                                                 1,075,099

Barclays Bank PLC                                                                                 826,844

Barclays Capital Inc                                                                               44,309

Barclays Capital Securities Ltd                                                                 1,495,847

Barclays Global Investors Canada Ltd                                                               12,454

Barclays Global Investors Japan Trust & Banking                                                   187,254

Barclays Global Investors Australia Ltd                                                            14,127

Barclays Life Assurance Co Ltd                                                                    250,148

Barclays Global Fund Advisors                                                                     904,405



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

BBHISL Nominees Ltd                                                                                 1,806

Boiss Nominees Ltd                                                                                245,511

Barclays Capital Nominees Ltd                                                                   1,152,685

Barclays Capital Nominees Ltd                                                                      44,309

Barclays Global Investors Canada                                                                   12,454

Chase Nominees Ltd                                                                                105,970

Chase Nominees Ltd                                                                                 65,051

Durlacher Nominees Ltd                                                                            343,162

Durlacher Nominees Ltd                                                                            826,844

Investors Bank and Trust Co.                                                                      972,475

Investors Bank and Trust Co.                                                                      904,405

JP Morgan (BGI Custody)                                                                            54,385

JP Morgan (BGI Custody)                                                                           130,712

JP Morgan (BGI Custody)                                                                         1,623,565

JP Morgan (BGI Custody)                                                                           198,486

JP Morgan Chase Bank                                                                               14,127

JP Morgan Chase Bank                                                                                5,472

JP Morgan Chase Bank                                                                              187,254

JP Morgan Chase Bank                                                                               10,324

Mellon Trust - US Custodian /                                                                       5,795

Mitsui Asset                                                                                        2,861

R C Greig Nominees Limited GP1                                                                        375

State Street Boston                                                                                80,018

Trust & Custody Services Bank                                                                         639



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



10 January 2007


12. Total holding following this notification



7,000,024


13. Total percentage holding of issued class following this notification



3.28%


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



10 January 2007


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