Directorate Change

23 November 2011

Amerisur Resources Plc ("the Company")

Directorate Change

Amerisur Resources Plc, the oil and gas producer and explorer focused on South America is pleased to announce the appointment of George Woodcock as a non-executive Director effective immediately.

George, who holds a degree in Pure and Applied Physics from the University of Salford, started his career in the oil industry in 1968 when he joined BP Exploration. During 20 years with BP he occupied multiple technical and managerial posts, most notably Vice President Exploration and Production BP Developments Australia (North West Shelf Project), and Chief Geophysicist BP Colombia, where he was responsible for the discovery of the Cusiana field.

On leaving BP George was head of interpretation for Sirte Oil in Libya and General Manager of Tuskar Petroleum, running the Rubiales field in Colombia from 1990 to 1992. Subsequently George has co-founded and managed various private exploration companies in Colombia including Copeco, Expet and Petex, in addition to undertaking extensive technical consultancy work.

Giles Clarke, Chairman, commented:

"We have further strengthened your Board with the appointment of George Woodcock who is an oil industry veteran with significant knowledge of and experience in managing oil and gas assets in Colombia. We welcome George to the Board."

-Ends-

Disclosures under AIM Rule 17

George Woodcock, aged 71, is or has been a Director of the following companies during the previous five years:

There is no further information required to be disclosed under paragraph (g) of Schedule 2 of the AIM Rules.

ENQUIRIES: