Net Asset Value(s)

Impax Environmental Markets plc announces that as at the close of
business on 18 July 2008 its net asset value ("NAV") per ordinary
share ("Share") was as follows:


Undiluted NAV per Share (including current financial year     121.18p
revenue items)

Undiluted NAV per Share (excluding current financial year     120.59p
revenue items)

Diluted NAV per Share (including current financial year       119.69p
revenue items)

Diluted NAV per Share (excluding current financial year       119.14p
revenue items)



Investments in the Company's portfolio have been valued on a bid
price basis.

Diluted NAV per Share assumes full conversion of all outstanding
warrants.

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