The BBC’s appointment of another white man as director-general is an own-goal against diversity

There are many things we have to thank the BBC for: entertaining us with Killing Eve, Line of Duty, Monty Python, The Goon Show, The News Quiz and The Unbelievable Truth; broadening our horizons with Sir David Attenborough and informing us with Peter Taylor’s coverage of Northern Ireland; Kate Adie’s reporting from war zones...