The V-bombers were the original British Nuclear Deterrent in the 1950's, and have since been replaced by Trident. HMS Vanguard was the first of four submarines to be launched, carrying out the first Trident missile test in 1994.
Bremerton, Wash. (Feb. 2, 2004) The Ohio class fleet ballistic missile submarine USS Michigan (SSBN 727) enters into the Puget sound naval shipyard and intermediate maintenance facility to commence engineered refueling overhaul and eventual conversion from a fleet ballistic missile submarine (SSBN) to a guided missile submarine (SSGN). U.S Navy photo. (RELEASED)