Im afraid that most posters here have it wrong, he’s unlikely to be in a general population Cat A prison.
t’s likely that he’d go to a specific sex offenders prison, eg HMP Ashfield. There’s been a huge rise in the number of sex offenders in prison over the last decade - both as a result of sex crimes like rape being taken more seriously by police, but also because of the bravery of people like yourself reporting historical sex crimes after Operation Yewtree.
The average age of a sex offender in prison has also risen considerably because of historical sex crimes being pursued. What this meant was that suddenly there were prisoners in their 70s, 80z,
90s being put in old Victorian jails which didn’t have accessible cells etc, and so they’ve built new prisons which can accommodate their needs.
They aren’t nice places to be. Not so much for violence - that’s more an issue in general prisons that have high issues with drugs etc - but imagine that every person there has the characteristics of a sex offender - they are manipulative, devious, untrustworthy. It means prison officers have to be incredibly vigilant. Your abuser will be isolated and lonely. There are very high levels of suicide within the sex offender estate.
Secondly, the prison officer recruitment crisis, coupled with the COVID crisis means that time out of cell is very limited. He’s likely to be locked up 23 out of 24 hours in a very small room, with very limited entertainment. The monotony, the boredom, the claustrophobia will be intense.
I hope this gives some insight. Not nice places.