Back in the 90s they only used to show PCBH once a week in the ITV region I lived in (although I think at one point they did show it twice a week) and it used to be on a Thursday night. It was always on after 11pm and I can remember being really tired but wanting to stay up and watch it, ...
I used to watch it whilst doing my A Level maths homework, which was always set in the Friday morning maths lesson to be given in the following Friday. Often PCBH would have long finished before I finally completed everything and went to sleep at 2:30 or so.
Used to drive my parents mad