No one does agonising quite like Mobeen Azhar. In several BBC documentaries now, he’s set his face to pensive, gone off on an earnest quest to investigate a touchy subject and reached his conclusions only after the most extravagant of brow-furrowing. There is, however, a perhaps unexpected twist: the resulting programmes are rather good, creating the impression – or even reflecting the reality – of a man determined to get to the often dark heart of the matter.