Being going through a lot of old film archive websites and found quite a few interesting military vehicle ones- For starters a 1943  film about a garage in Cambridge on a very busy main road , that also is doing a lot of work on AEC Matadors , Morris Quads , CDSW etc link- http://www.eafa.org.uk/catalogue/2044 still shots from film of Matador , anyone interpret the markings ?