Holding(s) in Company

TR-1:  Notification of Major Interests in Shares
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 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):
Full name of person(s) subject to the notification obligation:		The Capital Group Companies, Inc.
Full name of shareholder(s) (if different from 3.):		See Schedule A
Date of the transaction and date on which the threshold is crossed reached:		11 February 2013
Date on which the issuer notified:		12 February 2013
Threshold(s) that is/are crossed or reached:		Below 4%

8.  Notified details:
A:  Voting rights attached to shares
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
			Direct	Indirect	Direct	Indirect	Direct	Indirect
Ordinary Shares (GB0009465807)	8,549,970	8,549,970		8,475,979		8,475,979		3.9883%

B:  Qualifying Financial Instruments
Resulting situation after the triggering transaction
Type of financial instrument	Expiration date	Exercise/Conversion Period	Number of voting rights that may be acquired if the instrument is exercised/converted	% of voting rights
N/A

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments
Resulting situation after the triggering transaction
Type of financial instrument	Exercise price	Expiration date	Exercise/ Conversion period xviii	Number of voting rights instrument refers to	% of voting rights
N/A					Nominal	Delta

Total (A+B+C)
Number of voting rights	% of voting rights
8,475,979	3.9883%

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

See Schedule A

Proxy Voting:
Name of the proxy holder:
Number of voting rights proxy holder will cease to hold:
Date on which proxy holder will cease to hold voting rights:

Additional information:
Contact Name:
Contact telephone number:

Schedule A

As of 11 February 2013

The Weir Group PLC

	Number of Shares	Percent of Outstanding
The Capital Group Companies, Inc. ("CG") holdings	8,475,979	3.998%
Holdings by CG Management Companies and Funds:
· Capital Research and Management Company	8,475,979	3.998%
· EuroPacific Growth Fund

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Source: The Weir Group PLC via Thomson Reuters ONE

HUG#1677724