HOUSTON -(Dow Jones)- Ensco International Inc. (ESV) said Monday that it will move its headquarters and most senior managers from Dallas to the U.K. as part of a plan to become more global. The move will allow the offshore drilling services contractor to be closer to customers and European institutional investors, and will lower its global tax rate, the company said in a release Monday. "The new corporate headquarters will facilitate executive oversight of our global operations and senior executives will be closer to more of our customers," Chief Executive Dan Rabun said in a statement. Ensco will change its name to Ensco International PLC. The company already has substantial operations in the U.K. The changes are subject to shareholder approval at a meeting tentatively planned for Dec. 22. Shares of Ensco traded recently at $47.47, down 1.2%. -By Angel Gonzalez, Dow Jones Newswires; 713-547-9214;angel.gonzalez@dowjones.com