Holding(s) in Company

RNS Number : 5654D

Weir Group PLC

16 September 2008

TR-1: NOTIFICATION OF MAJOR INTERESTS IN SHARES

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

The Weir Group PLC

2. Reason for the notification (please state Yes/No):

An acquisition or disposal of voting rights: (Yes)

An acquisition or disposal of financial instruments which may result in the acquisition of shares already issued to which voting rights are attached: (No)

An event changing the breakdown of voting rights: (No)

Other (please specify): Initial notification due to change of threshold for non-material interest (No)

3. Full name of person(s) subject to the notification obligation (iii):

Prudential plc group of companies

4. Full name of shareholder(s) (if different from 3.):

See additional information under 13.

5. Date of the transaction (and date on which the threshold is crossed or reached if different):

15 September 2008

6. Date on which issuer notified:

16 September 2008

7. Threshold(s) that is/are crossed or reached:

8. Notified details:

A: Voting rights attached to shares

Situation previous to the triggering transaction

Class/type of shares if possible using the ISIN CODE	Number of shares	Number of voting Rights
GB0009465807	Below 3%	Below 3%

Resulting situation after the triggering transaction

Class/type of shares if possible using the ISIN CODE	Number of shares	Number of voting rights		% of voting rights
	Direct	Direct	Indirect	Direct	Indirect
GB0009465807	6,648,555	6,648,555		3.16%

B: Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument	Expiration Date	Exercise/Conversion Period/ Date	Number of voting rights that may be acquired if the instrument is exercised/ converted.	% of voting rights
N/A	N/A	N/A	N/A	N/A

Total (A+B)

Number of voting rights	% of voting rights
6,648,555	3.16%

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

Prudential plc (parent Company)

The Prudential Assurance Company Limited (wholly owned subsidiary of Prudential plc

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

13. Additional information:

PRUDENTIAL PLC

Registered Holder	Holding	%
MAGIM HSBC GIS NOM(UK) SALI	47,649
PRUCLT HSBC GIS NOM(UK) PAC AC	6,146,088
PRUCLT HSBC GIS NOM(UK) PPL AC	314,690
PRUCLT HSBC GIS NOM(UK) EQBF AC	17,412
PRUCLT HSBC GIS NOM(UK) MNBF AC	23,379
PRUCLT HSBC GIS NOM(UK) PENE AC	99,337
Total	6,648,555	3.16

M&G GROUP LIMITED

Registered Holder	Holding	%
MAGIM HSBC GIS NOM(UK) SALI	47,649
PRUCLT HSBC GIS NOM(UK) PAC AC	6,146,088
PRUCLT HSBC GIS NOM(UK) PPL AC	314,690
Total	6,508,427	3.09