Its easy its a Valentine dingo humber Mark II. The early versions were all OD but some had MM camo. Three were made for home defence but, were so successful(well Ze Germans never landed) that they landed two days before D-Day and actually captured Hitler making off in a Ramjager over the German alps (they were able to do this as the Germans nor anybody else had ever seen one and, the crews were all able to say Wot iz Your Name?)
So, but for this AFV that fought exclusively with the 19/5 Royal green Hussars artillery regiment 6 based at Scapa flow, Hertfordshire the war would not have ended with Old Hitler putting a bullet through his kneecap!!!!!
Historically as correct as it gets
Mitch