On board the County class guided missile destroyer London (1961) alongside the fitting out berth at the Neptune Works of Swan, Hunter & Wigham Richardson Ltd at Wallsend-on-Tyne. The ship is berthed starboard side to the quay. The photographer is in the Seaslug missile transmitting station annexe between 140 and 148 stations on 3 deck showing the T.S. officers cabinet assemblies manufactured by C & N (Electrical) Ltd of Gosport. A type BD control unit and a type JA oscillator are on top of a wooden cupboard. On the right are two missile operators positions with each chair being fitted with a control panel on the left arm and facing console assembly AA comprising units Z1AA, Z9AA and one other unit.