Here Niamh....
'An unofficial biography of David Cameron written by the Conservative donor Lord Ashcroft has made a series of claims about his involvement in a drug-taking environment at university, a bizarre dinner club initiation ritual and his knowledge of the peer’s offshore tax status.
The publication of extracts in the Daily Mail, two weeks before the Tories’ autumn conference, is a sign of how far Ashcroft has fallen out with the prime minister, who is said not to have followed through on a promise to give him a significant job after the 2010 general election.
The book, co-written by the journalist Isabel Oakeshott, alleges that Cameron knew in 2009 that Ashcroft had non-dom tax status. When a row about this blew up just before the 2010 election, the prime minister claimed only to have been aware about it for a month.'