03/06/2013 10:44 BST | Updated 03/06/2013 10:50 BST

Secret Affair Rocks Downing Street: The Most Shocking Political Sex Scandals Of All Time

John Major listens as Edwina Currie making a point at the beginning at the launch of the party's European Manifesto in London. * 28/9/02: Former Prime Minister John Major and his Conservative colleague Edwina Currie had a four-year love affair when serving as ministers, Mrs Currie said. The affair began in 1984 when Mr Major was a government whip and Mrs Currie a backbencher, she said in her diaries, which are being serialised in The Times newspaper. 22/10/02: Major s secret affair with fellow Tory minister Edwina Currie has put him in the same league as Liam Gallagher and Ozzy Osbourne, a survey found. The once grey man, who had a fling with the outspoken former MP, was ranked seventh in a poll to find the top of the bad behaviour league. Craggy rock legend Mick Jagger topped the chart which was organised to tie in with a new show on the Bravo TV channel, called Hellraisers Handbook.

A sensational love affair that "stunned" David Cameron when he was told about it has set Westminster abuzz.

And that was about all the Mail on Sunday told us, claiming it was legally barred from revealing the participants.

Pundits who have been told are divided on the significance of the alleged fling, which some claim could have major political ramifications.

One insider claimed it would be as shocking as former Prime Minister John Major's fling with Tory MP Edwina Currie.

But how will this one stack up against the most sensational political sex scandals of all time?

We may never know..

Photo gallery Political Affairs See Gallery