The Super Powers make the rules and they bend the rules. They can also make others bend to the rules. With so much muscle, financial power and diplomatic clout, the US can get away with many things.
In the meantime, we can refuse the Billions of USD in aid that the UK Government gives us annually and send their ambassador packing, if we are serious about getting AH repatriated/deported back to Pakistan. Otherwise we are just hypocrites, accepting their money and favor and then speaking against them for political point scoring.