Holding(s) in Company

Porvair PLC
20 June 2003

To RNS

SECTION 198 COMPANIES ACT 1985 - 3% NOTIFIABLE INTEREST

We were advised today that Schroder Investment Management Ltd have an interest 
in 8,107,035 shares which are held as portfolios managed by them on a 
discretionary basis for clients under investment management agreements.

This interest represents 22.08% of the Company's issued share capital.

From Porvair plc


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