[David_Hayward (RIP)]

I have just retrieved my 1943 BRANHAM'S from store, and it has the wartime Canadian cars and trucks listed in it. Only certain years and certain supplements have Canadian info in them.
The 1942-3 3-tonners were C29T, C298T and C296T....123" w.b.?,134" w.b., and 158" w.b. respectively I suppose. The C298TFS, C29WFS and C298WFS were the military versions of these. [AND RIGHT HAND DRIVE CIVILIAN STYLE WOULD BE C29TF, C298TF AND C296TF]

I am adding to this comment the evidence that C298TFS chassis were exported under British contract to Australai and Egypt, etc., and thus would have been right hand drive. The photo just might be of one of the batch:

A 5809058 to A5809257 Contract SM 2972 "Ambulance 3- ton 4x2 4-stretcher"..note the Red Cross badge. If it's not then it's not a British order for the UK.