To ask the Secretary of State for Defence whether the high security vehicles for the transfer of special nuclear materials are still in service. (308189)

In support of the UK’s nuclear deterrent, High Security Vehicles are used to transport special nuclear material between the Atomic Weapons Establishment at Burghfield and the Royal Naval Armament Depot Coulport. These vehicles are planned to remain in service until they are replaced by the Truck Cargo Heavy Duty Mk 3. As I told the hon. Member in the answer I gave on 10 November 2009, Official Report, column 237W, these are planned to be brought into service by the end of 2010.