Canning Town FS Dennis N types
1926 Dennis N series Braidwoods AN 1785 AN 3000 AN 3333. AN 3333 was the first WHFB appliance fitted with a Tamini pump, whereas the earlier N series had Gwynne pumps. The fireman standing is William Mackay Clelland, who received multiple injuries on the first day of the Blitz in 1940. He is probably on watchroom duty here, not riding the appliances.
Picture added on 07 August 2019 at 10:42