I don't think duties of care existed much back in the sixties & seventies, I would imagine there were many people getting away with all sorts of things back then. I recall an interview in the eighties with Tony Blackburn who said he had slept with over a thousand women, and this was reported in the press as some sort of achievement for the rest of us to applaud, and there have been no accusations towards him, I don't think. Hopefully he was "above board" all the time but it still shows a complete disregard for women and how easy it was to do what he did, I mean, he wasn't exactly blessed with film star looks and these women would predominantly have been people who just followed the DJs around. I just think the BBC didn't know how to handle the behaviour of their "talent" in the midst of the swinging sixties and the idea that they were a facilitator, enabling the introduction of vulnerable young women for middle aged men to take advantage of, is something that wouldn't be considered back then. Now whether Savile's activities just got dismissed as "DJ behaviour" and for the worst rumours they were waiting for proof of, or an arrest, that never materialised, that's difficult to know. The BBC weren't the only ones duped by him - he convinced many that the rumours were untrue, authorities, royals, hospitals etc - so it's not correct to say they had the power to expose him, in my view. After all, if the police and the Queen believed him, how would the BBC do that without evidence?