Directorate Change

Aminex PLC
21 March 2007






21 MARCH 2007



                                   AMINEX PLC

                          ("Aminex" or the "Company")



                             RETIREMENT OF DIRECTOR



Aminex, the oil and gas company listed on the London and Irish Stock Exchanges,
announces with regret the retirement of its non-executive director Mr. Andrew
Windham with immediate effect.  Mr. Windham has recently accepted an appointment
as Managing Director - Africa Region for Tullow Oil PLC ("Tullow") and considers
that a potential conflict of interest could arise if he were to remain on the
board of the Company.  Since Tullow's acquisition of Hardman Resources Ltd ("
Hardman"), recently completed, Tullow has become an interested party in Aminex's
12,000 square kilometre Ruvuma licence in southern Tanzania where exploration
work is in progress.  Aminex farmed out an interest in this licence to Hardman
in early 2006.  Tullow also holds adjacent acreage to Aminex in Madagascar where
Aminex is a participant in the 10,750 square kilometre Manja licence, Block
3108.

Commenting on this announcement Aminex Chief Executive Brian Hall said:

"We shall be very sorry to lose Andrew Windham and the strong contribution he
has made during the relatively short time he has been a non-executive director
of the Company.  We wish him all good fortune in a challenging position as a
regional head of one of the leading independent oil and gas companies operating
on the African continent today.  Strong links will be maintained with him
through Aminex's association with Tullow in the highly promising Ruvuma basin
area."



END



Enquiries:



Aminex PLC                                               [phone]

Brian Hall - Chief Executive



Pelham Public Relations                                  [phone]

Archie Berens




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