The UK government is set to announce a £350 million contract to refit one of its nuclear submarines in a move that will secure 2,000 jobs.
The work, which will be carried out at Babcock's Devonport Dockyard in Plymouth, will include fitting the Royal Navy's HMS Vengeance with a new reactor core, as well as refitting and refuelling of the vessel.
Equipment on board the submarine will be completely overhauled, with missile launch capabilities improved and computer systems upgraded. The work programme is expected to last between three and four years.