not bad Sherlock
, but
Axis propaganda likely.
no certainity that stock pictures were not used. Axis always tended to use pictures of non-europeans, to dehumanize the enemy. Here Africans in british battledress are shown, so likely french colonial troops?
Anyway, it does give a hint to french troops and how they were outfitted by the British, however there were other metropolitan units who had the intention of upholding visible traditions, for instance french officers are almost always shown with kepi.
so still a bit one-sided. But the source is in any case very good for pictures of any kind