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 GWS 21 Seacat missile power room and local maintenance annexe between 114 and 123 stations on the centreline of 1 deck. A test bench is on the left and an electric fire, a cable reel and a fan starter panel are against the end bulkhead. Various servo test and other units and a storage unit for valves, lamps, quartz crystal valves, cathode ray tubes, tools, components and miscellaneous items are on the right. A vertical format negative.