Pete,
Here is IWM film of elements of 8th AB entraining at Newmarket for the south coast in preparation for D-Day.
https://film.iwmcollections.org.uk/record/2170
Amongst the vehicles is a Loyd TS&C (confirmed by census number) which carries the same markings as the Shermans, Valentines and Crusader AAs- ie Div/Brigade sign, AoS square with unit number and Squadron sign
As an aside, interesting to see the 17 Pdrs on the Fireflies covered by tarps.
Simon