This guy was always creepy IMHO. I worked there 10 years ago, and he was just weird.
Well known for his secrecy and rather strange attributes.
Now we know why.
Coincidentally, he's the second "sex pest" pilot I have known in the last decade.
I also had the serious misfortune of training with the perverted ex Monarch FO from Northamptonshire who was convicted of kiddy fiddling a few years back.
He wasn't even subtle. He used to tell us all about how much he enjoyed having the neighbours kids over.
Very grim.