Ensco plc Announces Cash Dividend

Ensco plc (NYSE: ESV) announced today that its Board of Directors has declared a regular quarterly cash dividend of US$0.35 per Class A ordinary share payable on 17 September 2010 to holders of Ensco’s American Depositary Shares (ADSs) as of the 6 September 2010 record date.

Ensco brings energy to the world as a global provider of offshore drilling services to the petroleum industry. With a fleet of ultra-deepwater semisubmersible and premium jackup drilling rigs, Ensco serves customers with high-quality equipment, a well-trained workforce and a strong record of safety and reliability. To learn more about Ensco, please visit our website at www.enscoplc.com. Ensco plc is an English limited company (England No. 7023598) with its registered office and global headquarters located at 6 Chesterfield Gardens, London, W1J 5BQ.