Holding(s) in Company

Impax Group PLC
20 March 2007


TR-1:               notification of major interests in shares

1. Identity of the issuer or the underlying issuer of                   Impax Group plc
existing shares to which voting rights are attached

2. Reason for the notification     (please tick the appropriate box or boxes)

An acquisition or disposal of voting rights

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): Compliance with DTR Transitional Provision 7                          X


3. Full name of person(s) subject to the                         QVT Financial LP
notification obligation:

4. Full name of shareholder(s) (if different
from 3.):
                                                                     QVT Fund LP
5. Date of the transaction (and date on which        n/a - Disclosure made puruant to DTR - TP 7
the threshold is crossed or reached if
different):

6. Date on which issuer notified:                                   19 March 2007

7. Threshold(s) that is/are crossed or                                   22 %
reached:

8. Notified details:


A: Voting rights attached to shares

Class/type of    Situation previous to   Resulting situation after the triggering transaction(i)
shares           the Triggering
                 transaction
 if possible     Number of   Number of   Number of       Number of voting rights   % of voting rights
using the ISIN   Shares      Voting      shares
CODE                         Rights      Direct          Direct     Indirect       Direct   Indirect
Ordinary Shares                          24,700,000                 24,700,000              22.9%


B: Financial Instruments
Resulting situation after the triggering transaction
Type of financial    Expiration date Exercise/ Conversion      Number of voting rights    % of voting
instrument                           Period/ Date              that may be acquired if    rights
                                                               the instrument is
                                                               exercised/ converted.

Total (A+B)
Number of voting rights                               % of voting rights

24,700,000                                            22.9 %


         9. Chain of controlled undertakings through which the voting rights and/or the financial
         instruments are effectively held, if applicable:
         None



         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:

         14. Contact name:                   Jacqueline Brown

         15. Contact telephone number:       020 7434 1122




--------------------------





                      This information is provided by RNS
            The company news service from the London Stock Exchange