Holding(s) in Company

Porvair PLC
19 August 2002




LETTER TO: RNS



          SECTION 198 COMPANIES ACT 1985 - 3% NOTIFIABLE INTEREST

We were advised today of the following declarable holdings by Schroder 
Investment Management Limited:
 

Registered owner                    No. of shares            % holding

Schroder Unit Trusts Limited            4,973,444               13.514
(Chase Nominees Limited)



LETTER FROM: PORVAIR PLC



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