Just as a follow-up to this thread, I took your suggestion Rich, and contacted the IWM who provided a number of scans and caption information and your hunch was right. It is indeed the 240th Bty, 51st Med Regt somewhere in Western Command territory in 1941. A view of the rear of the FWD (although somewhat distant) shows what appears to be the fig leaf on what background of 3 Corps. 
Thanks for your suggestion and input. 
 
Cheers, 
 
Neil
		 
		
		
		
		
		
		
		
		
	
	 |