To ask the Secretary of State for Defence what plans or studies have been made by his Department to assess measures that would have to be taken in the event of contamination by airborne plutonium resulting from a nuclear weapons accident aboard a Royal Navy ship docked at Greenwich.

I refer the hon. Lady to the reply that I gave to the hon. Members for Newham, North-West (Mr. Banks) and for Islington, South and Finsbury (Mr. Smith) on 8 June, Official Report, column 724.