Holding(s) in Company

Porvair PLC
10 July 2002


Letter to RNS

SECTION 198 COMPANIES ACT 1985 - 3% NOTIFIABLE INTEREST

We were advised today of the following declarable holdings by Friends Ivory &
Sime plc following their acquisition of Royal & Sun Alliance:

Registered owner                     No of shares               % holding

Littledown Nominees Limited            1,823,619     
Chase Nominees                           179,571
Citifriends Nominees Limited           2,385,495
HSBC GS Nominees Limited               1,207,647                
                                       5,596,332                  15.21

From  Porvair PLC




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