19 August 2013

Ensco plc Announces Cash Dividend

LONDON--(BUSINESS WIRE)-- Ensco plc (NYSE: ESV) announced today that its Board of Directors has declared a regular quarterly cash dividend of US$0.50 per Class A ordinary share payable on 20 September 2013 to holders of Ensco’s shares as of the 9 September 2013 record date.

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Ensco plc (NYSE: ESV) brings energy to the world as a global provider of offshore drilling services to the petroleum industry. For more than 25 years, the company has focused on operating safely and exceeding customer expectations. Ensco is ranked #1 for total customer satisfaction with top honors in 10 of 16 categories in the most recent annual survey by EnergyPoint Research. Operating the world’s newest ultra-deepwater fleet and largest fleet of active premium jackups, Ensco has a major presence in the most strategic offshore basins across six continents. Ensco plc is an English limited company (England No. 7023598) with its registered office and corporate headquarters located at 6 Chesterfield Gardens, London W1J 5BQ. To learn more, visit our website at www.enscoplc.com.

Source: Ensco plc

Ensco plc

Investor Contacts:

Sean O’Neill, 713-430-4607

Vice President - Investor Relations and Communications

or

Nick Georgas, 713-430-4490

Manager - Investor Relations

or

Media Contact:

Alice Brink, 713-430-4658

Manager - Communications