§ Mr. SillarsTo ask the Secretary of State for Defence what is the latest estimate of the cost of constructing(a) four Trident submarines and (b) three Trident submarines over the next five-year period from the start of the financial year; and if he will give revenue running costs where applicable.
§ Mr. Kenneth CarlisleThe Government remain committed to a four-boat Trident submarine force. Whilst it is not our practice to provide detailed forecasts of project expenditure, I can confirm that the estimated cost of constructing the four Trident submarines over the next five years is about £1,400 million.