Cameron faced repeated questioning over his previous experience of drugs during the campaign for the Conservative leadership in 2005, after he refused to say whether he had ever used illicit substances.
In a TV interview then, he said: "I'm allowed to have had a private life before politics in which we make mistakes and we do things that we should not and we are all human and we err and stray."
He hinted he had taken drugs by saying he had had a 'normal' university life, but insisted his right to privacy meant there was no need to give more details.
No doubt he thinks he was allowed to have a 'normal political life' before he became leader of the party.
"I will withdraw the Conservative Party from the EPP by Christmas". (Frimley 23/11/05)