Ensco plc Reports U.S. Gulf of Mexico Rigs Continue to Operate

Ensco plc (NYSE: ESV) reported today that its U.S. Gulf of Mexico drilling rigs continue to operate and the Company is closely monitoring developments related to the oil spill. Ensco is taking necessary safety precautions to protect personnel and equipment, and is in close contact with the authorities.

Ensco currently has eight rigs working in the U.S. Gulf of Mexico, of which two are operating in the area of the oil spill.

Ensco plc (NYSE: ESV) 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 registered in England No. 7023598 with offices located at 6 Chesterfield Gardens, London, W1J 5BQ.