Question to the Ministry of Defence:
To ask the Secretary of State for Defence, what the location is of the site used to produce the pressure hull steel used in the production of the Trafalgar class and Vangard class submarines.
The pressure hull steel used in the production of the Vanguard Class of submarine was predominantly sourced from the British Steel Corporation's Dalzell plant in Motherwell, Scotland. Owing to the time that has elapsed since the procurement of steel for the Trafalgar Class submarines, reliable information on the source is not readily available. However, it is likely that the pressure hull steel was produced by UK manufacturers.