Hopefully he will be released soon and be reunited with his loved ones.
You are living in La-La land. This place is a toilet. In countries like this you have no rights. This guy is stuffed. Not unless you can grab one of the ruling bastard's family and send bits of him to his relations back home in an envelope will you have a chance. So I'd start the hunting the scum in Bond/Sloane/Regent Street, the places where these vermin shop.
But that doesn't mean to say I'm not sympathetic - just realistic.