Director Declaration

Tullow Oil PLC

14 June 2010

Tullow Oil plc ('Tullow' or 'the Company')

Director Declaration

The Company gives notification that Clare Spottiswoode, a non-executive Director of Tullow Oil plc, has been appointed as a non-executive Director of G4S plc with effect from 14 June 2010 and as a non-executive Director of Ilika plc with effect from 5 May 2010.

These disclosures are made pursuant to rule 9.6.14 (2) of the Listing Rules of the UK Listing Authority.

This announcement has been issued through the Companies Announcement Service of

the Irish Stock Exchange.