Damian McBride has insisted he did not break the law while working as a Labour spin doctor and said he would be happy to speak to police if they decide to look into complaints from a Conservative MP.
Asked if he was concerned about possible prosecution, Mr McBride said:
I am sure that I wasn't committing any criminal offences. I wouldn't leak confidential documents and I would take pains to not do so.
I would be happy to talk to the police if they wanted an explanation.
More top news
A British scientist says the age women may be able to conceive children could soon be significantly extended.
Simon Cowell admitted he was "so embarrassed" after his shirt burst open during an X Factor audition.
Following the promise of further powers for Scotland, David Cameron is now talking about a new deal for the other home nations.