Ensco Waves Goodbye to Executive VP and COO (UK)

William S. Chadwick, Jr., Executive Vice President and Chief Operating Officer of Ensco plc, will retire from the company effective 31 August 2012. Mark Burns, currently Senior Vice President – Western Hemisphere, will succeed Mr. Chadwick as Executive Vice President and Chief Operating Officer.

“It has been a joy to work with such a group of dedicated and skilled employees – truly the best in the world. And I am confident that the organization will continue to thrive and achieve even greater heights in the future with Mark as Chief Operating Officer.”

“Bill has been a tremendous force within Ensco, and has helped guide our company from its inception through its growth into a premier offshore drilling company,” said Dan Rabun, Chairman, President and CEO. “His focus on safety, operational excellence and efficiency has shaped our culture and helped make us the driller of choice in the industry. We wish Bill the very best in his well-deserved retirement.”

Mr. Chadwick joined Ensco in June 1987 as one of the organization’s first employees and served in leadership positions throughout his 25-year tenure. He was elected to his current position in January 2006.

“It has been my privilege to be a part of Ensco for the last 25 years and to play a role in making Ensco the industry leader it is today,” said Mr. Chadwick. “It has been a joy to work with such a group of dedicated and skilled employees – truly the best in the world. And I am confident that the organization will continue to thrive and achieve even greater heights in the future with Mark as Chief Operating Officer.”

Mr. Rabun noted, “Mark is a natural leader and an outstanding executive who is respected throughout our industry. Mark currently reports to Bill and we anticipate a very smooth transition.” Mr. Burns was named Drilling Contractor of the Year in 2007 by the International Association of Drilling Contractors.

Mr. Burns joined Ensco in 2008 and became Senior Vice President—Western Hemisphere last year at the time of the acquisition and has been responsible for managing Ensco’s largest business unit, North and South America, and integrating a new business unit, Brazil. He will relocate from Houston to Ensco’s headquarters in London.

Steven J. Brady, currently Vice President – Europe and Mediterranean, will succeed Mr. Burns as Senior Vice President – Western Hemisphere and relocate from Aberdeen to Houston. Mr. Brady joined Ensco in December 2002 and served in various business unit leadership positions in the Eastern Hemisphere prior to being named to his current position in May 2011. Prior to joining Ensco, Mr. Brady spent 18 years in various technical and managerial roles for ConocoPhillips in locations around the world. Mr. Brady holds a bachelor’s degree in Petroleum Engineering from Mississippi State University.

Both Mr. Brady and Carey Lowe, Senior Vice President – Eastern Hemisphere, will report directly to Mr. Burns.

Julian Hall, currently Manager – Operations, Europe and Mediterranean, will be promoted to Vice President – Europe and Mediterranean and will remain in Aberdeen.

Derek Kent has been named Vice President – Middle East and Africa, effective immediately. Mr. Kent has been Vice President – Safety, Health & Environment since May 2011. He will relocate from Houston to Dubai.

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Press Release, June 28, 2012