Pictures from derelict filming location!
http://www.derelictplaces.co.uk/main/showthread.php?t=24772&highlight=pyestock#.UPcowyf0K8A
The National Gas Turbine Establishment at Pyestock was used to film scenes for this film. Note the blast door in shot 8.
"Somebody help me, I'm being spontaneous!" - Truman Burbank