Share interests

Old Mutual PLC
03 August 2005


                                Share interests
                                        
Old Mutual plc (the 'Company') announces that it has today received the
following notices relating to changes in notifiable interests, for the purposes
of Part VI of the UK Companies Act 1985:

   • The notifiable interest of Public Investment Corporation of the Republic
     of South Africa ('PIC') has reduced to 299,338,194 shares, representing
     7.76% of the Company's current issued ordinary share capital. 92,379,445 of
     the shares are held by PIC itself and the remainder are held through the
     following asset managers:

            Futuregrowth                                 41,905,854
            Old Mutual Asset Managers (SA)               45,243,704
            Sanlam Investment Management                 42,730,826
            Stanlib Asset Management                     77,078,365

     The most recent previous notification of PIC's shareholding, in November 
     2004, was 398,417,574 shares in the Company, representing 10.34% of the 
     Company's then current issued ordinary share capital.

     PIC is a non-banking financial intermediary responsible for the investment 
     of public sector pension and provident funds and various social security 
     and trust funds in South Africa.

   • The notifiable interest of Sanlam Investment Management (Pty) Limited
     ('Sanlam') has reduced to 141,767,994 shares, representing 3.68% of the
     Company's current issued ordinary share capital. 63,999,781 of the shares
     are managed on behalf of Sanlam itself and the remainder are managed on
     behalf of third party investors, including the investment on behalf of PIC
     mentioned above.

     The most recent previous notification of Sanlam's shareholding, in June 
     2005, was 162,122,094 shares in the Company, representing 4.20% of the 
     Company's then current issued ordinary share capital.
                                                                   3 August 2005


ENQUIRIES:

Old Mutual plc UK
Miranda Bellord     [phone]

Old Mutual plc SA
Nad Pillay          [phone]


For further information about Old Mutual plc visit www.oldmutual.com



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