Holding(s) in Company

Porvair PLC
9 September 2002


Letter to: RNS


             SECTION 198 COMPANIES ACT 1985 - 3% NOTIFIABLE INTEREST
             -------------------------------------------------------

We were advised today of the following declarable holdings by Friends Ivory and
Sime plc:
 
Registered owner                No. of shares            % holding

FPCP Stewardship                    
(HSBC GS Nominees Ltd)              1,563,202                 4.25

FP Stewardship UK Fund              
(Citifriends Nominees Ltd)          1,322,857                 3.59

Including the above material interests Friends Ivory & Sime plc is interested in
a total of 4,898,433 shares (13.31%).

From: Porvair PLC


                      This information is provided by RNS
            The company news service from the London Stock Exchange