While the outer walls of the bunker are three feet thick, the inner walls are more ordinary. Many of the rooms are made up by dividing the space with wooden and plasterboard partitions. These have not survived the damp and the years too well.


Many smaller rooms like this are unlit and not suitable for unaccompanied exploration which is why the public tours are guided, both for interest and safety.


This room is clear but most of the wall has gone leaving a lonely door frame!


The original wiring of the bunker was divided into two circuits, essential and non essential. These two fuseboxes are so labelled and they are still to be found labelled all over the bunker. The labels sometimes give a clue to the uses for the rooms in the bunker, but are not too specific.


There are also some small mysteries like this concrete plinth, with bolts in it, for some item of machinery, or more likely a transformer. There is no trace now of what it might have been. This sort of thing often supported a generator, but the bunkers generator is still intact as previous pictures show. Elsewhere is a room lined with metal mesh, except for the ceiling. It is reported that this room was used as an anechoic chamber for testing microphones, the metal mesh being covered at one time with foam rubber to absorb sound.


This is the other plant room, containing air cooling equipment. The bunker did not need heating, but people and machinery produce heat and this is still a problem in such structures today.


Now a few extra pictures from a later tour in May 2003. First the chamber put in by Post Office engineers after the war. This has puzzled people for a while but it appears this wire mesh supported foam rubber to make this an echo free, or anechoic chamber for testing microphones.


Next to the Cabinet room is a rather delapidated room, with a message hatch. This was probably a teleprinter room and there are tables all round with power points.


This is just a big empty room, but it shows the structure of the roof well.