Richard
Haven't seen any pics of Snipe staff cars in RAF service . A restored Snipe heavy utility has appeared on a few UK TV shows in RAF blue , you probably know the owner .
A friend here is restoring a Humber FWD Heavy Utility , one of 3 known in the country . He has the remains of a Humber Mk 3 light recce car for spares . A few more are in NZ .
Have you seen the pic of the Humber snipes in Malaya circa 1941
http://www.geocities.com/vk3cz/Paint.html
BTW I have the Humber 4X2 april 1945 maint. manual on CD
Mike