GWR Bulldog 4-4-0 No 3346 Godolphin in 1910c.
It is at Hayes posed for the painting by F Moore. There are 2 other photos taken at this location th tree in background are very identifiable. One is Dean single 3065 and the other is a Badminton 'Oxford'. The photos both have the same rake of coaches in the same position! It would appear that the publicity department changed the locos on the original photos!

Photo: Rail Archive Stephenson