For safety reasons, all visitors must enter the site in a vehicle NOT on foot. Any visitors dropped off on Carbine Road by car or public transport will be denied access.
Visitors must be able to climb the 68 stairs from the carpark to the Tour Reception, and a further 24 stairs to access the tour galleries. Walking frames and crutches are not permitted as they are hazardous during an emergency evacuation. Wheelchairs are permitted but ONLY by prior arrangement - please let us know in the comments.