Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi
1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached:ii			Weir Group Plc
2 Reason for the notification (please tick the appropriate box or boxes):
An acquisition or disposal of voting rights				X
An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached
An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments
An event changing the breakdown of voting rights
Other (please specify):
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.):iv		See attached schedule
5. Date of the transaction and date on which the threshold is crossed or reached:v		23 January 2012
6. Date on which issuer notified:		24 January 2012
7. Threshold(s) that is/are crossed or reached: vi, vii		4% - 3%

8. Notified details:

A: Voting rights attached to sharesviii, ix

Class/type of shares if possible using the ISIN CODE

Situation previous to the triggering transaction

Resulting situation after the triggering transaction

Number of Shares

Number of Voting Rights

Number of shares

Number of voting rights

% of  voting rights x

Direct

Direct xi

Indirect xii

Direct

Indirect

GB0009465807

8,476,620

8,476,620

8,369,033

8,369,033

3.95%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date xiii

Exercise/ Conversion Period xiv

Number of voting rights that may be acquired if the instrument is exercised/ converted.

% of voting rights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments xv, xvi

Resulting situation after the triggering transaction

Type of financial instrument

Exercise price

Expiration date xvii

Exercise/ Conversion period xviii

Number of voting rights instrument refers to

% of voting rights xix, xx

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

8,369,033

3.95%

9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable: xxi
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:
14. Contact name:	James Todd / Mark Thomas M&G Investment Management Limited
15. Contact telephone number:	020 7548 2293 / 020 7548 3266

PRUDENTIAL PLC
Registered Holder	Holding	% Voting Rights
PRUCLT HSBC GIS NOM(UK) PAC AC	8,231,293
PRUCLT HSBC GIS NOM(UK) PPL AC	137,740
Total	8,369,033	3.95
THE PRUDENTIAL ASSURANCE COMPANY LIMITED
Registered Holder	Holding	% Voting Rights
PRUCLT HSBC GIS NOM(UK) PAC AC	8,231,293
PRUCLT HSBC GIS NOM(UK) PPL AC	137,740
Total	8,369,033	3.95

Percentage holdings are calculated using 211,342,082 Total Voting Rights

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information contained therein.

Source: The Weir Group PLC via Thomson Reuters ONE

HUG#1579862