Has there ever been such an explosive and, quite frankly, entertaining witness at a public enquiry as Paul McMullan, ex News of the World journalist turned whistleblower? Picture Credit Twitter almost exploded this afternoon as McMullan gave evidence about phone hacking, journalistic methods and the ties between the press, the police and politics in UK. He admitted being proud of the Name and Shame campaign that led to a paediatrician being beaten up by yobs who misunderstood the difference between paediatrician and paedophile. He defended phone hacking as being a “perfectly acceptable tool”. He was asked if phone hacking was widespread at the NoW and if his editors know about…