Holding(s) in Company

5 August 2010

CIRCLE OIL PLC

("Circle" or the "Company")

Shareholdings in Company

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

Matterhorn Investment Management LLP is the registered holder of 21,641,040 shares which represents 3.88% of the Company's issued share capital

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