Holding(s) in Company

Impax Environmental Markets plc has received the following
notification from Universities Superannuation Scheme ("USS").

"We write to advise you under the requirement of the Companies Act
2006 that our holding at 20th January 2007 was 19,768,930 ordinary
shares.

176,000 Re: UK Index Fund registered under Chase Nominees Ltd (USS)
19,592,930 Re: Alternative Investments registered under Chase
Nominees Ltd (USS)

We believe the number of shares in issue at 20th January 2007 was
200,356,000 and therefore our holding represented 9.87% of the issued
share capital of the company at that date."

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