The guy confronting NS looks like he's one of the Al Muhajiourn types in the UK.
No difference to him being confronted by a radical right-winger in Peshawar. The only difference being he wouldn't be walking around like that in Pakistan, and so the chances of it happening are zilch.
Let's be honest, who would have a good thing to say to him when they meet him wherever you are in the world? Apart from his deluded supporters, the guy is just another thief sitting at the top of his mafia clan of Punjab.