David Cameron was drawn further into the phone hacking scandal tonight when Tory Central Office was forced to admit that Neil Wallis, a former deputy editor of the News of the World who has been arrested and questioned over hacking, may have advised Andy Coulson, Mr Cameron's closest press adviser before the last election.
It is the latest astonishing admission by Downing Street and piles further pressure on Mr Cameron over his hiring of Mr Coulson, who has also been arrested and questioned recently by detectives investigating the scandal.