The hunt is on to find out which current Tory MP and contemporary of Dave at Oxford squealed. Guido makes no allegations about any of those listed below for information purposes only…

• Michael Gove: He was a gossipy young wannabe journalist at the time and enjoyed a wild university experience himself. Most famously Gove was accused in the Cherwell student newspaper of participating in a “five-in-a-bed romp” while president of the Oxford Union debating society.

• Rory Stewart: According to lifelong friend Felix Martin, Rory “was a leading member of the Piers Gaveston Society”, the debauched Oxford club at which Dave allegedly did the deed. A few years younger than the future PM, though…

• Boris Johnson: A former Buller man and also reportedly an alumnus of Piers Gaveston, Boris was famously snapped with Dave in the picture they tried to ban. Is there another more revealing photo in existence?

• Ed Vaizey: Was at Oxford at the same time as Dave, where he was known as “Tubby Teddy” or “Fat Eddie“. Like Dave, also one of the Notting Hill set.

• Mark Field: Two years above Cameron, the Tory backbencher was news editor of Cherwell and renowned for his own youthful exuberance. When he ended his term as Junior Common Room president, Field apparently “ran round the college quad between the strokes of midnight singing the Red Flag, naked except for a pair of boxer shorts, his bare skin coated in baby oil“.

• Mark Harper: A couple of years below Dave, Harper is a fellow Brasenose College alumnus, and was another PPEist. Now Cameron’s chief whip…

• Nick Boles: A year older than Cameron at Oxford, where he was a young Tory activist and another Notting Hill setter.

So, whodunnit?

Pic via @GeneralBoles