Holding(s) in Company

Weir Group PLC
08 September 2005



                                                                8 September 2005

The Weir Group PLC (the 'Company') received notice from Threadneedle Asset
Management Limited dated 7 September 2005 that, for the purposes of Section 198
of the Companies Act 1985, American Express Company and its Group hold the
following notifiable interest in the Ordinary shares of the Company.

Registered Owner                                      Ordinary 12.5p shares
------------------                                    -----------------------

Bank of Ireland Nominees         A/c 4261416                           116,250
Bank of Ireland Nominees         A/c 4239914                           148,479
BNY (OCS) Nominees Ltd           A/c 219720                            480,140
BNY (OCS) Nominees Ltd           A/c 214561                             57,063
Littledown Nominees Ltd          A/c 07203                              40,834
Littledown Nominees Ltd          A/c 21667                              37,188
Littledown Nominees Ltd          A/c 34789                              83,126
Littledown Nominees Ltd          A/c 07207                             400,969
Littledown Nominees Ltd          A/c 07196                              45,928
Littledown Nominees Ltd          A/c 07197                             141,460
Littledown Nominees Ltd          A/c 03449                           1,410,402
Littledown Nominees Ltd          A/c 27642                             221,506
Littledown Nominees Ltd          A/c 02642                             556,139
Littledown Nominees Ltd          A/c 10479                               9,000
Littledown Nominees Ltd          A/c 05577                              39,876
Littledown Nominees Ltd          A/c 18667                             320,000
Littledown Nominees Ltd          A/c 10469                             522,889
Littledown Nominees Ltd          A/c 10496                           1,460,864
Littledown Nominees Ltd          A/c 10492                             939,836
Littledown Nominees Ltd          A/c 10491                           3,117,388
Littledown Nominees Ltd          A/c 10488                           3,192,500
Littledown Nominees Ltd          A/c 10495                           3,290,000
Littledown Nominees Ltd          A/c 10489                             178,757
Littledown Nominees Ltd          A/c 10490                             147,835
Littledown Nominees Ltd          A/c 05576                             602,924
Mellon Nominees (UK) Ltd         A/c WWSF0004002                       245,909
Mellon Nominees (UK) Ltd         A/c AVOF0003002                       482,304
Morgan Stanley Nominees Limited  A/c 04F607107                       1,200,000
Roy Nominees                     A/c 104450                             79,769
State Street Nominees Limited    A/c JY 17                             895,439
State Street Nominees Limited    A/c JTAV                               71,341

                         TOTAL                                      20,536,115





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