A few years back the Yemen government wanted him deported there, but this was turned down, because their system of law and human rights is a bit suspect. If they deport him to the USA after that it'd be a bit bizarre, given stuff like Guantanamo Bay and Abu Ghraib.

The right place for any trial would be here. Not that the British legal system isn't pretty ropey at times, but there are limits. And anyway it's where he lives and if he's guilty of breaking the law, this is where he'd have done it.

The stuff about getting state benefits and that are totally irelevant to my mind. Things like that aren't supposed to be deteremined on the basis of people's political or religious views, however bizarre.