Nuclear Weapons (Expenditure) Mrs. Winifred Ewing asked the Secretary of State for Defence, of the average annual cost of operating the United Kingdom Polaris force, namely £37 million, what proportion has been spent (a) inside the United Kingdom and (b) outside the United Kingdom. Mr. Mason I would refer the hon. Member to the answer I gave on 28th November 1974 in which I informed her that national security precluded the publication of such information.