There used be a dirty little secret lurking inside some of the biggest media companies in the world: the secret of how powerful men in senior positions treated, demeaned and often abused their junior female subordinates within a blokey culture that actively protected this kind of behaviour at the highest levels.

Like many other dirty little secrets, insiders knew what was going on and had been going on for decades. But for obvious career-limiting reasons, they looked the other way and never blew the whistle.