Shareholdings in Company

6 August 2010

CIRCLE OIL PLC

("Circle" or the "Company")

Shareholdings in Company

The Company was advised by correspondence dated 5 August 2010 that at 4 August 2010 the following shareholder had a notifiable interest in the shares of the Company:

American Funds Insurance Series Global Small Capitalization Fund is the beneficial holder of the shares listed below. Capital Research and Management Company are the holders of the voting rights attached to these shares.

No of shares held % of total Company shares in issue

22,687,000 4.07

The percentage is based on the issued share capital of the Company being 557,503,486 ordinary shares.

For further information contact: 

Circle Oil Plc (+44 20 7638 9571)

Professor Chris Green, Chief Executive Officer

Brendan McMorrow, Chief Financial Officer

Evolution Securities (+44 20 7071 4311)

Rob Collins

Chris Sim

Neil Elliot

Fox-Davies Capital (+44 20 7936 5230)

Jonathan Evans

Citigate Dewe Rogerson (+44 20 7638 9571)

Martin Jackson

Murray Consultants

Joe Heron +353 87 690 9735

Joe Murray +353 86 853 4950