GWR Castle class 4-6-0 No 4092 Dunraven Castle near Iver with a Fishguard to Paddington express on June 21, 1930.

Peter Kerslake says "4092 was built in August 1925 and allocated from new to Old Oak Common, later spending time at Worcester and finally being withdrawn from Oxford in December 1961."

Photo: George R. Grigs/Rail Archive Stephenson