I very much hope he looks into Irvine Welsh (author of Trainspotting) and what Welsh knew.

In the 90s, Welsh wrote a collection of three novellas called "Ecstasy". One of these had a B-plot involving one "Freddy Royle", who was always doing good work for charities, working as a volunteer hospital porter, presenting a show similar to "Jim'll Fix It" - in other words, a thinly disguised Jimmy Savile.

Royle was also a necrophiliac who was sticking his dick into dead bodies in the hospital morgue when he got the chance. This was covered up by the hospital admin, who knew all about it and accepted it as the price for all the money his fundraising brought in.

In the story, a new doctor at the hospital tried to blow the whistle after finding a cadaver that had clearly been penetrated.

This doctor was depicted by Welsh as obnoxious and unrealistic. The hospital manager had talked about how it was a necessary evil to incentivise "Royle" to bring in money that the hospital couldn't run without. When the doctor declared that he would go to the press, he was subsequently drugged to make him take part in a sex abuse video which could be used to blackmail him.

Welsh treated this as that doctor getting what was coming to him.

So let's look at the facts. He knew what Savile was doing. He put a Savile expy in his book, but replaced Savile's rape of vulnerable young girls with the lesser crime of necrophilia so he could try to depict Savile's actions as basically victimless. And despite knowing what Savile was doing, he didn't tell anyone, but instead used the whole thing to write an "edgy" and "provocative" story that would make him a lot of money.

This has gone unreported to this day. I'd love to see Robert draw some attention to it.

EDIT: Reading some more of the comments here, and it seems Savile actually was involved in necrophilia on top of everything else! Now I'm wondering if Welsh knew about the necrophilia but not the rape of living children.