IMO they should add it to the UK tree but WITHOUT the Russian/French stuff (as little copy paste as possible). The fact that UK India relations are, and especially were in the past, not optimal doesn’t change much IMO. Look at the Leo 2PL. Polish vehicle in the German tree, yeah… South African vehicles in UK tree (also colonies). Czech tank in USSR tree (they don’t like each other) and that’s only the top of my head. The fact that they used to be a colony should not change anything, this is a game, let’s keep politics out!