BAE Systems in Barrow is set to benefit from £350 million worth of defence funding.
The cash will be used to help design and build the next generation of nuclear-powered submarine.
An announcement is expected by the Defence Secretary Philip Hammond later.
Mr Hammond said: "The Government's position on this is very clear. We are committed to maintaining a continuous deterrent.'
Nick Clegg accused Defence Secretary Philip Hammond of "jumping the gun" on Trident as tensions grew over British nuclear-armed submarines
The Ministry of Defence has awarded BAE Systems at Barrow £315 million for ongoing design work for a Vanguard submarine replacement.