It's bound to put further strain on relations between the National Health Service and its political masters which have become increasingly fraught under the then Labour government and now under the coalition.

BBC: Stafford Hospital report to shape the health debate

This trial has put a strain on relations.

BBC: Aids trial adjourned

Should the United States now disrupt the British program due to its inability to supply D-5 missiles when and in the quantity called for by bilateral agreements, it could have a catastrophic effect on the viability of the U.K. Trident and severely strain relations between two key allied governments.

CENTERFORSECURITYPOLICY: Center for Security Policy | Congressional Efforts To Delete Funds For The Trident II: One More Step Toward Comprehensive, Unilateral US Disarmament