I just noticed that they have a Boys anti-tank rifle... so they're planning to go up against a tank? Some pooping/sphincter tightening coming up!
Resicast make excellent kits of the Early Carrier versions that were used from 1934 and into 1940 by the BEF. Nearly all these carriers were left in France after Dunkirk.
There are two types
Scout Carrier - Boyes AT Rifle is part of the standard Fit
Machine gun carrier - carried the Bren and sometimes a Vickers
The Resicast site has some great photos of the kits from various angles, showing the differing fit out. These kits are so far the only ones in the game of the early version as far as I know and build up very nicely. Ask me how I know
The main difference is how the rear compartment is set up, the Armoured side swaps depending on the version. So you can see why the move to the Universal carrier version from 1940 made obvious sense.
A T16 carrier would be better, with better mobility.
Maybe but I'm not sure if any kits are available.
Could always consider the Loyd Carrier. Different role, different base vehicle, but sizeable enough. Bronco do one of them in 1/35