Reading again how it was reported that the brother told Philth:
Phillip said it was usual for him to cry when telling stories but 'this was crazy'. He went on: 'We ended up having dinner and I was washing up. Tim was standing behind me and he said you are going to hate me for what I'm about to say. I said there's nothing he could say that would make me hate him.
'He said [the alleged victim and him] had their time together and last year watched porn.
'I turned and said, 'What did you just say?' 'Schofield then said it 'was a moment we were together'. Tim said it was just this time and I told him it should never happen again,' Phillip said.
Philth must have known the victim was under age, otherwise what reason would there be for him to say, “it should never happen again”? And why would Tim say, “you are going to hate me for what I’m about to say”? I mean, if he was talking about a consenting adult, there would be no reason for him to say that. Sure, it’s gross for your brother to talk about his personal life in detail, but you wouldn’t say to a sibling carrying out relations with another adult that it ‘should never happen again.’
Therefore, I don’t understand why Philth didn’t report it. He clearly knew it was a crime.