Holding(s) in Company

Man Group plc
21 June 2005


                                  SCHEDULE 10

                   NOTIFICATION OF MAJOR INTERESTS IN SHARES


1. Name of company

Man Group plc


2. Name of shareholder having a major interest

Aviva plc and its subsidiary Morley Fund Management Limited


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

A material interest of Aviva plc and its subsidiary Morley Fund Management
Limited


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
-------------------                                        ---------

BNY Norwich Union Nominees Ltd                             3,657,516
BT Globenet Nominees Ltd                                       4,100
Chase GA Group Nominees Ltd                                2,538,530
Chase Nominees Ltd                                           482,691
CUIM Nominees Ltd                                          2,608,862


5. Number of shares / amount of stock acquired

365,598


6. Percentage of issued class

N/A


7. Number of shares / amount of stock disposed

N/A


8. Percentage of issued class

N/A


9. Class of security

Ordinary shares of 18 US cents each


10. Date of transaction

Unknown


11. Date company informed

21 June 2005


12. Total holding following this notification

9,291,699


13. Total percentage holding of issued class following this notification

3.04%


14. Any additional information

None


15. Name of contact and telephone number for queries

Mr Barry Wakefield   020 7144 1735


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

Mr Peter Clarke, Company Secretary


Date of notification

21 June 2005


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