The first ‘15xx’ 0-6-0PT No. 1500 parked at the back of the shed minus its front driving wheels and the frames supported by a mobile trolley in April 1961. In the background is the extensive AEC Motors factory. For over sixty years, AEC Limited, formerly the Associated Equipment Company Limited, was the builder of commercial vehicle chassis and diesel engines for use around the world, including the iconic London ‘Routemaster’ double decker bus. The site was closed in 1979.

Peter Kerslake says " I suspect that this view may have been obtained from a carriage window on the main lne , with the first of Hawksworth's " 1500 " class with its wheel set rolled out and both the engine and removed axle being supported beneath on what is probably Slough's " Dead Line " .
Allocated initailly to Old Oak Common , 1500 heralded the ten of this class , designed pimarily for empty stock workings between the Old Oak Carriage sidings and Paddington , duties which they performed well , being popular with footplate crews and additionally with shed staff , the outside valve gear being easy to access whilst the locomotives were on shed "