Even for our broken prison service it’s been a terrible few days. On Saturday the jihadi terrorist Hashem Abedi used boiling oil and ‘homemade weapons’ in an assault at HMP Frankland which hospitalised three prison officers, the Prison Officers’ Association has said. Given the severity of the injuries, with one man suffering a severed artery in his neck and the other being stabbed at least five times in the chest, it’s only thanks to luck that no staff were killed.