I think the only place in '41 for a UK IC is in SA. Maybe one in Egypt if it survives T1, but it’s pretty universal now that everyone takes it T1 for obvious reasons. I’ve heard the case for one in Australia, but I don’t like that one either. It’s too easy for Japan to take out. On J2 it can easily be taken and for sure on J3. So if you’re going to you’d almost have to wait until B4 to have any hope of defending it. I know if I saw a B1 or B2 buy of an IC in Australia I would gun for it hard with Japan.
The Norway IC I just don’t see working because the Brits don’t really need the extra three unit build, plus for the same SBR reason that a France IC for germany isn’t the best idea.
I guess there could be some games where the US having an IC there could help, but on the whole I think that’s just not a great spot for one.