Damian McBride compared his activities as Gordon Brown's spin doctor to those of a "rogue trader in the 1980s", saying Labour leaders were unaware of the way he operated.
McBride told ITV's Daybreak: "I'd compare it to when we had some of the rogue bankers ... people weren't asking enough questions about how they were making their profits."
More top news
GPs have a public duty to tell authorities if a patient is driving against medical advice, new guidance from the GMC says.
The Government may be about to announce a new levy on council tax of up to 2% to replenish social care budgets.
How do you solve a £4.4 billion hole like tax credits? At 12.30pm on Wednesday, we'll find out.