The Production Control Room.  Sadly, the desk had been removed.  However, the monitor layout is clear - A TX monitor and preview monitor at the bottom, four camera previews above them and two selectable previews for captions etc above them.  It seems that there were two clocks.  In the days of live TV I suppose that they could not rely upon only one!

Note that the monitor stack is surrounded by the window looking onto the studio floor.  This was considered vital in those days but now it never happens.  The window on the right looked onto the sound control room.