These photos show that a workshop Land Rover was attached to the 110/111th LAA unit. Would it have been there for the Inters or the guns?
Impossible to know unless one was there I suspect.
A unit armourer would probably not need a workshop for the guns; most parts for weapons are expense stores and can be carried in anything and used as necessary, with the exception of things such as barrels/breeches; breech-blocks, etc. which are not repairable at that level and would have been returned to a base workshop when they were worn-out.
Perhaps the most useful Land Rover workshop for this unit, would have been the POL lubrication one, given all of the oil and greasing points on the vehicles and presumably guns,
Cheers Charlie