> I have an Australian acquaintance who got into trouble recently since he was born in Scotland but moved to Australia as a child.

He's not a member of ACDC is he? ;)

I think many in the UK don't really regard Aussies or Kiwis as "immigrants" at all. I have various red faced in-laws with political views that are, shall we say, to the right of centre and they see Aussies as just Brits with funny accents.