Holding(s) in Company

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

"We write to advise you that following a recent purchase of 379,000
shares, our holding in Impax Environmental Markets plc has increased
to 20,147,930 ordinary shares.

555,000 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 present is 200,356,000
and therefore our holding now represents 10.05% of the issued share
capital of the company."

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