X0303 4 2010-06-07 0000314808 Ensco plc ESV 0001354803 Rabun Daniel Wayne 6 CHESTERFIELD GARDENS 3RD FLOOR LONDON X0 W1J 5BQ UNITED KINGDOM 1 1 0 1 CEO and President Chairman American Depositary Shares 2010-06-07 4 F 0 11227 35.10 D 210444 D Amount is representative of a second surrender of American Depositary Shares for tax purposes as related to the vesting of restricted shares which took place 06/01/2010. /s/ Cary A. Moomjian, Jr., by Power of Attorney 2010-06-09