Interests in shares via proxy

Old Mutual PLC
24 May 2007


REG- Old Mutual plc Holding(s) in Company

24 May 2007

TR-1: Notification of major interests in shares resulting from proxy votes for AGM

1  Identity of the issuer or the underlying     Old Mutual plc
issuer of existing shares to which voting 
rights are attached        
                       
2. Reason for the notification                  X
An acquisition or disposal of voting rights                               
An acquisition or disposal of financial 
instruments which may result in the 
acquisition of shares already issued to 
which voting rights are attached
An event changing the breakdown of voting
rights
Other (please specify):

3. Full name of person(s) subject to the       Christopher Douglas Collins
notification obligation:                       (Old Mutual plc Chairman and 
                                               proxy holder)                         
        
4. Full name of shareholder(s)                 Plc Nominees (Pty) Limited
  (if different from 3.)                       Chase Nominees Limited
                                               Plus 1,867 other proxy votes from                               
                                               shareholders with holdings of less 
                                               than 3%

5. Date of the transaction (and date on        23 May 2007
which the threshold is crossed or reached 
if different):                                                                
                     
6. Date on which issuer notified               23 May 2007                                           
                     
7. Threshold(s) that is/are crossed or         51.8%
reached: 
                      
                                                                                                                        
8. Notified details                       
   A: Voting rights attached to shares

   Class/ type of shares and ISIN Code         Ordinary shares of 10p each
                                               ISIN GB0007389926
   
   Number of shares prior to triggering        Below 3%  
   action 

   Number of voting shares prior to            Below 3%
   triggering action

   Number of voting rights                    Direct   50,000 
                                              Indirect 2,703,124,779                                          
                     
   % of voting rights                         Direct   0%
                                              Indirect 51.8%

   B: Financial Instruments                   Not applicable

   Total (A+B)                                Number of Voting rights: 
                                              2,703,174,779 
   
   % of voting rights                         51.8%

     
9. Chain of controlled undertakings which the voting rights and/or financial 
instruments are effectively held, if applicable

   N/A

10. Name of proxy holder                     Christopher Douglas Collins
                                             (Old Mutual plc Chairman)                        
                                                             
11. Number of voting rights proxy holder     2,703,124,779  
will cease to hold    
                                                                                    
12. Date on which proxy holder will          24 May 2007
cease to hold voting rights                                 
                    
13. Additional information                   This notification relates to voting 
                                             rights held by Christopher Douglas 
                                             Collins (Chairman,Old Mutual plc) 
                                             pursuant to proxies received for the
                                             purposes of the Old Mutual plc Annual 
                                             General Meeting to be held on 24 May 
                                             2007. The voting rights will lapse 
                                             immediately upon the conclusion of 
                                             the meeting and voting rights
                                             returned to the respective 
                                             shareholders who had provided proxy 
                                             instructions to him in connection
                                             with the meeting                                

14. Contact name                             Martin Charles Murray 
                                             (Group Company Secretary, Old Mutual plc)

15. Contact telehone number                  020 7002 7209
                                                                                                            
   Annex Notification of Major Interests
   in Shares                             
                                                                                
A; Identify of the person or legal          Christopher Douglas Collins
entity subject to the notification 
obligation                                                            
Full Name (including legal form for legal 
entities)

Contact Address                             Chairman
                                            Old Mutual plc
                                            5th Floor, Old Mutual Place
                                            2 Lambeth Hill
                                            London
                                            EC4V 4GG
                                            020 7002 7000                                                               
                                           
Other useful information (at least legal    N/A
representative for legal persons)                                              
                   
B: Identity of the notifier, if             N/A
applicable                                                                           
                   
Full Name                                   N/A       
Contact Address
Phone Number
Other useful information (e.g. functional 
relationship with the person or legal 
entity subject to the notification 
obligation)









                      This information is provided by RNS
            The company news service from the London Stock Exchange