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

I refer the hon. Member to the reply given by my hon. Friend the Minister of State for the Armed Forces to a question from the hon. Members for Newham, North-West (Mr. Banks) and for Islington, South and Finsbury (Mr. Smith) on 8 June at column 724.