This image, taken from the Department of Visual Records, is of course the steel electronic eye which orbits the Control Room. Through which someone, possibly Number One, can himself keep an open surveillance eye on what's going on. A case of the Observers themselves becoming the observed.
I had quite forgot about the following picture, I came across it when I was going through an old file of letters. It was sent to me by an old friend, Bill, after a trip to Paris several years ago.
I'll be seeing you