> Turn out not only the guy got out quietly but continues to write in newspapers preaching morality to others. I tried a lot of figure out how he might have escaped the law but I cant.

So you are assuming that he "escaped the law" without having found any evidence. The articles I've found indicates that a bail amount was set. He probably met it, pending trial. Unless you've seen him out and about outside of the UK, you have no basis for assuming he escaped anything.

It's also worth pointing out that he was arrested following a sting by a vigilante group. There's going to be all kinds of issues with chain of custody of the evidence etc. that makes this almost entirely unlike a case handled by police from the start.