Holding(s) in Company

Impax Environmental Markets plc has today received the following
notification of a major interest in its shares.

TR-1(i): NOTIFICATION OF MAJOR INTERESTS IN SHARES

1. Identity of the issuer or the underlying issuer of existing shares
to which voting rights are attached (ii):
IMPAX ENVIRONMENTAL MARKETS PLC


2. Reason for the notification (please state Yes/No): (    )

An acquisition or disposal of voting rights: ( YES   )

An acquisition or disposal of financial instruments which may result
in the acquisition of shares already issued to which voting rights
are attached: (    )

An event changing the breakdown of voting rights: (    )

Other (please specify) : (    )

3. Full name of person(s) subject to the notification obligation
(iii):
EAST RIDING OF YORKSHIRE COUNCIL

4. Full name of shareholder(s) (if different from 3.) (iv):
N/A

5. Date of the transaction (and date on which the threshold is
crossed or  reached if different) (v):
5 JUNE 2008

6. Date on which issuer notified:
    6 JUNE 2008

7. Threshold(s) that is/are crossed or reached:
4%

8. Notified details:
4.36%


A: Voting rights attached to shares


Class/type of shares if possible Situation previous to the Triggering
using the ISIN CODE                        transaction (vi)
ORDINARY                         Number of shares   Number of voting
                                                    Rights (viii)
GB0031232498                     7,119,002          7,119,002



Resulting situation after the triggering transaction (vii)


Class/type of shares if Number of Number of voting    % of voting
possible using the ISIN shares    rights (ix)         rights
CODE
                        Direct    Direct (x) Indirect Direct Indirect
                                             (xi)
ORDINARY                7,119,002 7,119,002  -        2.35%  -



B: Financial Instruments
Resulting situation after the triggering transaction (xii)


Type of      Expiration  Exercise/Conversion Number of voting  % of
financial    Date (xiii) Period/ Date (xiv)  rights that may   voting
instrument                                   be acquired if    rights
                                             the instrument is
                                             exercised/
                                             converted.
WARRANTS     16/06/2010  EVERY YEAR FROM     6,090,764         2.01%
GB00B0MD5W34             15/06/2006 TO
                         15/06/2010



Total (A+B)

Number of voting rights % of voting rights
13,209,766              4.36%



9. Chain of controlled undertakings through which the voting rights
and/or the financial instruments are effectively held, if applicable
(xv):
N/A

Proxy Voting:

10. Name of the proxy holder:
.......

11. Number of voting rights proxy holder will cease to hold:
.......

12. Date on which proxy holder will cease to hold voting rights:
.......
13. Additional information:
            CALCULATION BASED ON 303,246,052 SHARES IN ISSUE

            1,390,764 WARRANTS HAVE BEEN ACQUIRED

14. Contact name:
JOANNA STOCK

15. Contact telephone number:
01482 394 149



The person making this announcement on behalf of Impax Environmental
Markets plc is as follows;

Anthony Lee - tel [phone]

9 June 2008

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