I believe Harry was a frequenter of the Elm Guest House in West London, under the pseudonym of 'Kitty'. That alone would require further investigation surely?

It's the same venue that the Roman Catholic priest Tony MacSweeney (whom I knew!) visited, to abuse boys from the nearby children's home, who were taken there for the 'amusement' of paedophiles.

Now I can't believe Harry was unaware of the Ring that operated there. He must have known the couple who organised it. Why did he stay there?

I'm afraid I think that the CPR rejected the possibility of a prosecution/conviction due to lack of solid evidence.
The involvement of the BBC may have actually jeopardised any further action by the Police.

But without having undergone a trial, the man must be viewed as innocent, this being one of the most sacred tenets of our legal system.