Asylum

Well I would have thought that he will be allowed to remain in the UK once he's served his sentence OP. It's likely that he won't have any documents from his home country because they're usually either destroyed or non existent; therefore returning him would be virtually impossible. In addition, he'll be able to claim that returning him to his country of origin would put his life in danger; hence the reason that he probably left in the first place and, in any event would be in breach of his human rights. So it's very likely that he will remain. Frustrating isn't it?

Who knows. This country is such a soft touch.

Homed, not honed.