What is Trident? Britain s £21bn nuclear arsenal ready to launch at any moment | UK | News express.co.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from express.co.uk Daily Mail and Mail on Sunday newspapers.
The UK's Vanguard-class submarines, despite their age, continue to play a pivotal role in the Royal Navy's strategic defense capabilities, with plans for replacement by the Dreadnought-class in the next decade.
Defense chief tells lawmakers the U.K.'s Trident nuclear missiles are "dependable, and formidable" after a reported failed test launch off Florida.