REG- Old Mutual plc Holding(s) in Company

REG- Old Mutual plc Holding(s) in Company

6 June 2007
TR-1:          Notification of major interests in shares

1  Identity of the issuer or the      Old Mutual plc
underlying issuer of existing shares
to which voting rights are attached
2.  Reason for the notification        
An acquisition or disposal of voting  Yes
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 Legal & General Group Plc (L&G)
the notification obligation:
4.  Full name of shareholder(s) (if   Legal & General Assurance (Pensions
different from 3.)                    Management Limited) (PMC)
5.  Date of the transaction (and date
on which the threshold is crossed or    1 June 2007
reached if different):
6.  Date on which issuer notified     5 June 2007
7.  Threshold(s) that is/are crossed  From 3% to 4% (L&G)
or reached:
8.  Notified details

A:   Voting rights attached to shares

Class/ type   Number of   Number of    Number of voting     % of voting
 of shares     shares      voting           rights            rights
  and ISIN    prior to     shares
    Code     triggering   prior to
               action    triggering
                           action
  Ordinary   193,845,480 193,845,480   Direct    Indirect Direct Indirect
 shares of                           208,755,705           4.00
  10p each
    ISIN
GB0007389926
B:    Financial Instruments           
            Total (A+B)                       % of voting rights
Number of Voting rights: 208,755,705                4.00%
9.  Chain of controlled undertakings which the voting rights and/or
financial instruments are effectively held, if applicable
Legal & General Group Plc (Direct and Indirect) (Group) 
Legal & General Investment Management (Holdings) Limited
(LGIMH) (Direct and Indirect) 
Legal & General Investment Management Limited (Indirect) (LGIM)
  Legal & General Group Plc (Direct) (L&G) (208,755,705 - 4.00% = LGAS,
                               LGPL & PMC)
Legal & General           Legal & General Insurance Holdings Limited
Investment Management     (Direct) (LGIH)
(Holdings) Limited
(Direct) (LGIMHD)
(173,286,506 - 3.32% =
PMC) 
Legal & General Assurance Legal & General Assurance Society Limited 
(Pensions Management)     (LGAS & LGPL)
Limited  (PMC)
(173,286,506 - 3.32% =
PMC) 
                          Legal & General Pensions Limited (Direct) 
                          (LGPL)
10.  Name of proxy holder N/A
11.  Number of voting     N/A
rights proxy holder will
cease to hold
12.  Date on which proxy  N/A
holder will cease to hold
voting rights
13.  Additional           Notification using the total voting rights
information               figure of 5,212,750,231 
14.  Contact name         Martin Charles Murray
                          (Group Company Secretary, Old Mutual plc)
15.  Contact telehone     020 7002 7209
number