Holding(s) in Company

Porvair PLC
30 November 2004



SECTION 198 COMPANIES ACT 1985 - 3% NOTIFIABLE INTEREST
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We were advised today of the following holding by M&G Group Ltd 


Registered owner               No. of shares            % holding 
----------------               -------------            ---------

Nortrust Nominees Ltd            4,169,613                11.32


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