Holding(s) in Company

Weir Group PLC
19 February 2007



TR-1: notification of major interests in shares

1. Identity of the issuer or                 Weir Group PLC
the underlying issuer of
existing shares to which voting
rights are attached:

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2. Reason for the notification (please tick the appropriate box or boxes):
   N/A See additional information
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An acquisition or disposal of voting rights
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An acquisition or disposal of financial instruments which may result in the   
acquisition of shares already issued to which voting rights are attached
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An event changing the breakdown of voting rights

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3. Full name of person(s)                   Legal & General Group Plc (L&G)
subject to the notification                         
obligation:

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4. Full name of shareholder(s)              Legal & General Assurance (Pensions
(if different from 3.):                     Management) Limited (PMC)

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5. Date of the transaction and              N/A
date on which the threshold is                      
crossed or reached:

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6. Date on which issuer                     16 February 2007
notified:

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7. Threshold(s) that is/are                 Above 3% (L&G)
crossed or reached:

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8. Notified details:

A: Voting rights attached to shares

Class/   Situation previous  Resulting situation after the triggering
type of  to the Triggering   transaction
shares   transaction
if
possible Number  Number of   Number of    Number of voting      % of voting
using    of      Voting      shares       rights                rights
the ISIN Shares  Rights
CODE                         Direct       Direct     Indirect   Direct  Indirect
ORD GBP  6,661,576 = 3.26%   7,243,420    7,243,420             3.48
0.125
         (Under Section 198
          on the 03/09/03)

B: Financial Instruments

Resulting situation after the triggering transaction
Type of     Expiration Exercise/     Number of voting rights that may   % of
financial   date       Conversion    be acquired if the instrument is   voting
instrument             Period/ Date  exercised/ converted.              rights


Total (A+B)

Number of voting rights          % of voting rights
     7,243,420                         3.48

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9. Chain of controlled undertakings through which the voting rights and/or the 
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) (7,243,420 - 3.48% = LGAS, LGPL & PMC)

Legal & General Investment Management         Legal & General Insurance Holdings
(Holdings) Limited (Direct) (LGIMHD)          Limited (Direct) (LGIH)
(6,256,805 - 3.01% = PMC)

Legal & General Assurance (Pensions           Legal & General Assurance Society
Management) Limited (PMC)                     Limited (LGAS & LGPL)
(6,256,805 - 3.01% = PMC)                     

                                              Legal & General Pensions Limited 
                                              (Direct) (LGPL)

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Proxy Voting:

10. Name of the proxy holder:                                              N/A

11. Number of voting rights proxy holder will cease to hold:               N/A

12. Date on which proxy holder will cease to hold voting rights:           N/A

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13. Additional information:                   Using the total voting rights 
                                              figure of 207,789,799

                                              First notification under DTR 
                                              Sourcebook

14. Contact name:                             Helen Lewis

15. Contact telephone number:                 020 7528 6742




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