Tony Blair has hinted that he did not think he would be remembered for the "cash-for-honours" investigation.
The Prime Minister suggested in a newspaper interview he believed the controversy over the investigation would not last.
He made the comments despite being the only serving Prime Minister to be interviewed by police as part of a criminal investigation.
Mr Blair denies accusations of offering peerages for cash after four people he nominated for honours were found to have made substantial loans to the party ahead of the last election.
Asked about the year-long inquiry, Mr Blair told The Herald: "There is no point in me saying anything on this until it is done and dusted.
"People always say to me about a whole lot of issues that come in and out, especially of the scandalous, controversial sort, isn't it difficult this issue, or that issue.
"I always say to them, you've always got to distinguish between what goes in and out as huge media stories and the actual job you are getting on with.
"Particularly when you come to the end of your time as Prime Minister you have a far greater fixation on those things which you think will last rather than those things which by their very nature are ephemeral."
He was interviewed by Scotland Yard officers in December last year and then again in January.
At the time Downing Street stressed that he was not cautioned, which meant he was being treated as a witness rather than as a suspect.
