This might help @Dotta
http://www.prisonreformtrust.org.uk/Portals/0/Documents/PIB-Foreign national prisoners.pdf
Personally, it pains me that we now have to pay millions to keep him locked up here. I would much rather foreign nationals were allowed to serve sentences in their home countries (and ditto when Brits offend abroad).
I agree but only if the sentences dont get reduced once back in the home country.