I'm a bit puzzled here. The 3 bikes in front are BSA.
And in the back left and right Matchless. Is that correct ?
But what about the bike in the middle..? nr 917
Although the tank rubber is the same style as Enfield, gearbox is certainly not an Albion and I'm pretty sure that EMV 917 was a 1936 Matchless G7 250. EMV 635 appears in O&M.