Yes, they had a million and one things designed to catch your head, knee, elbow, eye etc. What that diagram doesn’t make clear is the bench seat running down the centre for the operators and Command Post Officer (CPO) to sit on. Underneath that were the batteries for FACE, 8 (or possibly 6) great big 12v 100ah lead acid things. Space was at a premium. In this pic I’m sitting with my back to the teleprinter and Bob Cooper was sitting on the commanders seat - it used to drop down and become a seat for a signaller :-) This would have been taken about 1983/4 https://beehaw.org/pictrs/image/2efa6209-1f32-49f8-abb2-dabda1bb9ce8.webp