For Canada you could include the Ram II as tank I and the Sexton SPG. They were built in some numbers, but the Ram II saw service only as a training tank, though it was probably superior to anything in the British inventory at the time. The Sexton (basically a Ram chassis with 25 pdr gun) saw action and was in service in South Africa into the 60s.
I think its ok to position the contribution of the Dominions collectively as 'British Empire' when we are talking about the major power blocks that constituted the 'allies', even if they did fight independently of British command, (such as Aussies in New Guinea). The Commonwealth air training program after all, was approved by the Brits which saw crew from as far apart as Rhodesia and New Zealand show up in Canada.
I think its ok to position the contribution of the Dominions collectively as 'British Empire' when we are talking about the major power blocks that constituted the 'allies', even if they did fight independently of British command, (such as Aussies in New Guinea). The Commonwealth air training program after all, was approved by the Brits which saw crew from as far apart as Rhodesia and New Zealand show up in Canada.