Notice of AGM

28 January 2011

Impax Asset Management Group plc

('Impax' or the 'Company')

Publication of Annual Report and Accounts,

Circular and Notice of Annual General Meeting ("AGM")

The Directors of Impax announce that on 28 January 2011 copies of the Company's Annual Report and Accounts for the year ended 30 September 2010 were sent to shareholders together with a circular setting out, inter alia, the following:

o Notice of AGM

o Form of proxy

o Proposed disapplication of pre-emption rights over ordinary shares until the conclusion of the next annual general meeting

o Proposed authority for the Company to buy-back ordinary shares

o Proposed dividend of 0.6 pence per share payable to the holders of ordinary shares on the register of members at the close of business on 11th February 2011

An electronic copy of the Annual Report and Accounts, circular and Notice of AGM will be available shortly from the Company's website www.impax.co.uk.

The Company's AGM will be held at the offices of MHP Communications Ltd., 60 Great Portland Street, London, W1W 7RT at 11.00am on 2nd March 2011.

Enquiries:

Impax Asset Management Group plc

Ian Simm, CEO 020 7434 1122

Keith Falconer, Chairman

Execution Noble & Company Limited

John Riddell, Director 0207 456 9191

Harry Stockdale, Associate Director

MHP Communications Limited

Gay Collins 0203 128 8582 [email protected]

Shona Prendergast 0203 128 8584 [email protected]