Keith, that's the one. APCM Stone Works according to the caption. The odd thing about the loco is that it is an Aveling & Porter traction engine based design. Look at the position of the compund cylinders on top of the boiler rather than either side directly coupled to the wheels. Built 1900, photo 1932. There's another one of similar, but not identical design in the Chatham Dockyard.
The railway was narrow gauge, and if you look closely at Google satellite view you can still see some of the trackbed. From Stone Crossing railway station, run your eye right until you come to the large modern "shed" building. Just prior to that you can see a trace of the track crossing Cotton Lane, passing under the railway and missing the end of Barley Close and St. Mary's Road. It then curves right crossing the A206 before disappearing under the car park. The pier directly opposite leading out to the ro-ro platform is on the site of the original railway pier.
