Holding(s) in Company

London Stock Exchange Group PLC
26 May 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 Global Investors Japan Ltd                                                                20,887
Barclays Capital Inc                                                                               71,892
Barclays Private Bank and Trust Ltd                                                                 1,806
Barclays Global Investors Canada Ltd                                                               13,552
Barclays Bank PLC                                                                               2,725,672
Barclays Life Assurance Co Ltd                                                                    252,256
Barclays Capital Securities Ltd                                                                   361,749
Barclays Global Investors Japan Trust & Banking                                                   244,630
Barclays Global Fund Advisors                                                                     917,446
Barclays Global Investors, N.A.                                                                 1,639,333
Gerrard Ltd                                                                                           375
Barclays Global Investors Ltd                                                                   2,394,719
Barclays Global Investors Australia Ltd                                                            30,797


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                                                                                   15,130
Barclays Capital Nominees Limited                                                                 218,366
Barclays Capital Nominees Limited                                                                 143,383
Barclays Capital Nominees Limited                                                                  71,892
Barclays Capital Nominees Limited                                                               2,725,672
Barclays Global Investors Canada                                                                   13,552
BNP Paribas                                                                                           747
Boiss Nominees Ltd                                                                                129,886
Chase Nominees Ltd                                                                                105,540
Chase Nominees Ltd                                                                                  3,421
Chase Nominees Ltd                                                                                 70,992
CIBC Mellon Global Securities                                                                         526
Clydesdale Nominees HGB0225                                                                         1,806
Investors Bank and Trust Co. (Ca                                                                    1,677
Investors Bank and Trust Co.                                                                        6,159
Investors Bank and Trust Co.                                                                       67,949
Investors Bank and Trust Co.                                                                      843,338
Investors Bank and Trust Co.                                                                       12,976
Investors Bank and Trust Co.                                                                        2,125
Investors Bank and Trust Co.                                                                       17,759
Investors Bank and Trust Co.                                                                       25,020
Investors Bank and Trust Co.                                                                      224,114
Investors Bank and Trust Co.                                                                        3,437
Investors Bank and Trust Co.                                                                       11,044
Investors Bank and Trust Co.                                                                    1,112,154
Investors Bank and Trust Co.                                                                       37,761
Investors Bank and Trust Co.                                                                       20,076
Investors Bank and Trust Co.                                                                          850
Investors Bank and Trust Co.                                                                        9,652
JP Morgan (BGI Custody)                                                                            58,958
JP Morgan (BGI Custody)                                                                           122,306
JP Morgan (BGI Custody)                                                                         1,987,044
JP Morgan (BGI Custody)                                                                           168,828
JP Morgan Chase Bank                                                                                7,018
JP Morgan Chase Bank                                                                               19,993
JP Morgan Chase Bank                                                                               10,804
JP Morgan Chase Bank                                                                               13,021
JP Morgan Chase Bank                                                                                2,234
JP Morgan Chase Bank                                                                                2,150
JP Morgan Chase Bank                                                                               29,212
JP Morgan Chase Bank                                                                                1,601
JP Morgan Chase Bank                                                                              116,815
JP Morgan Chase Bank                                                                               30,819
JP Morgan Chase Bank                                                                               23,426
JP Morgan Chase Bank                                                                               10,688
JP Morgan Chase Bank                                                                                6,684
JP Morgan Chase Bank                                                                               23,235
Mellon Trust - US Custodian /                                                                      15,381
Mellon Trust - US Custodian /                                                                       1,268
Mellon Trust of New England                                                                         1,438
Mitsui Asset                                                                                        3,321
Northern Trust Bank - BGI SEPA                                                                      1,676
Northern Trust Bank - BGI SEPA                                                                      1,802
Northern Trust Bank - BGI SEPA                                                                        413
R C Greig Nominees Limited GP1                                                                        375
State Street Bank & Trust - WI                                                                      1,545
State Street Boston                                                                               111,733
State Street Trust of Canada -                                                                      1,182
The Northern Trust Company - U                                                                        829
Trust & Custody Services Bank                                                                       2,311


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

26 May 2006


12. Total holding following this notification

8,675,114


13. Total percentage holding of issued class following this notification

4.02%


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

26 May 2006


The FSA does not give any express or implied warranty as to the accuracy of this
document or material and does not accept any liability for error or omission.
The FSA is not liable for any damages (including, without limitation, damages
for loss of business or loss of profits) arising in contract, tort or otherwise
from the use of or inability to use this document, or any material contained in
it, or from any action or decision taken as a result of using this document or
any such material.




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