The UK’s first ‘spin doctor’ thrived because he was immensely valuable to those he served. But the strategist always felt entitled to more

Others will be shocked by his sleazy, self-regarding disloyalty and apparent lack of concern for Jeffrey Epstein’s victims, but something that will puzzle people who knew Peter Mandelson is: how could he be so stupid?

Should you be thinking of stabbing a colleague in the back, and betraying your country, your government and your party – to paraphrase the prime minister – a basic precaution is not to leave an email trail. During the 2008 expenses scandal, it was the MPs who left proof of their dishonesty in emails who went to jail. I suspect many others got away with it for want of written evidence. You might think a politician so deviously clever that they call him the Prince of Darkness would know that, and not end up with police searching two of his houses.

Andy McSmith was chief press officer for the Labour party in the 1980s, and spent almost 30 years as a political journalist based in the House of Commons. His latest book, Strange People I Have Known, includes a chapter on Peter Mandelson