HYDRO INTERNATIONAL PLC

(the 'Company')

Notification of Shareholding

The Company was notified on 15 September 2009 that on 28 August 2009 Sheila Lamb ('the Seller') disposed of 150,000 ordinary shares of 5p each in the Company ('Shares'), as a result of which the Seller's shareholding in the Company (held through Nortrust Nominees Limited) was reduced from 2,016,689 to 1,866,689 Shares. Following the disposal the Seller's holding moved from 14.09 per cent to 13.04 per cent. of the total voting rights in the Company.

It is noted by the Company that in the Company's Report and Accounts for the year ended 31 December 2008, it was recorded that the Seller held 2,566,782 Shares in the Company as at 10 February 2009. The Company has since been informed that the Seller had disposed of a further 70,000 shares prior to such date and accordingly the correct number of Shares held by the Seller as at 10 February 2009 was 2,496,782 Shares. 

For further information please contact:

Tony Hollox                                                                              Tel: +44 (0) 1275 878371

Chief Financial Officer

Hydro International plc

KBC Peel Hunt Limited (Nominated Adviser & Broker)    Tel: +44 (0)20 7418 8990

Julian Blunt, Daniel Harris (Corporate Finance)

Matthew Tyler (Corporate Broking)

16 September 2009