In September last year, Peter Mandelson was fighting to keep his job as British Ambassador to the US after the first raft of revelations about the extent of his friendship with Jeffrey Epstein.

Within hours of the details emerging, an anonymous Wikipedia editor had made changes to Mandelson’s page that distanced him from Epstein and cast him in a sympathetic light. That editor has since been blocked for making undisclosed paid changes.

New details about the relationship between the two – including that Mandelson recommended a villa where Epstein could host his “guests” – have sparked a national scandal in recent weeks and led to pressure on Keir Starmer to step down as prime minister.

But over the course of two days in September, while Mandelson was still in his government job, the mysterious account made a series of edits that either reflected more favourably on him or pushed details of the Epstein scandal under unrelated information.

And when Mandelson was eventually sacked on 11 September, it moved within hours to remove the reason given by the Foreign Office for his dismissal: that Mandelson had told Epstein his 2008 conviction for sex offences was wrong and encouraged him to clear his name.