Holding(s) in Company

Porvair PLC 13 November 2006 To: RNS SECTION 198 COMPANIES ACT 1985 - 3% NOTIFIABLE INTEREST We have been advised of the following holding by Cavendish Asset Management plc held in portfolios managed by them on a discretionary basis. Registered owner No. of shares % holding ---------------- ------------- --------- Cavendish Asset Management 1,422,285 3.51 Cavendish Opportunities Fund 350,000 0.86 Total held 1,772,285 4.37 From: Chris Tyler Company Secretary Porvair plc This information is provided by RNS The company news service from the London Stock Exchange HOLAKNKPABDDQDD

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Porvair (PRV)
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