Australia has very one sided arrangements with some other places. It is far easier for Aussies to get into the UK than vice versa, for example. They get in visa free, but UK citizens need a visa.

I have an Australian acquaintance who got into trouble recently since he was born in Scotland but moved to Australia as a child. He is about as Aussie sounding as they come and went to school there, but after working in the UK for a year or two, Australian immigration gave him grief when he decided to return.

Australians actually comprise one of the biggest groups of illegal migrants in the UK, but they are more rarely commented on as they are much less visible than certain other groups. Australians with a parent or grandparent from the UK qualify, whereas those who don't, don't. But the ones who don't are rarely deported, and can't be easily distinguished in many cases.

> 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.