Barrow submarines: Third Dreadnought class build starts at BAE

Work to build the UK nuclear deterrent programme's latest submarine has started.

The first steel for the vessel Warspite has been cut at BAE Systems' shipyard in Barrow-in-Furness, Cumbria.

It is the third of four new Dreadnought class submarines being built to carry Trident ballistic missiles at an estimated cost of £31m.

Defence procurement minister Alex Chalk said progress was "crucial to maintaining our national security".