Net Asset Value(s)

Impax Environmental Markets plc announces that as at the close of business on 28 April 2008 its undiluted net asset value ("NAV") per ordinary share was 126.34p.  The diluted NAV per ordinary share (assuming full conversion of all outstanding warrants) was 124.48p.                                            Investments in the Company's portfolio have been valued on a bid price basis.  Current financial year revenue items have been excluded.    ---END OF MESSAGE---
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