Sources claim corporation journalists may have made early inquiries into allegations of workplace impropriety

For six days, the BBC’s top journalists have gathered at Broadcasting House in central London and dedicated themselves to investigating Huw Edwards, the corporation’s most famous news presenter.

Up above them, on the building’s fourth floor, the BBC director general, Tim Davie, has been working non-stop to get a grip on the scandal, receiving updates on the allegations, and fighting for the broadcaster’s reputation.