Here's a load of radio shows that I've uploaded.
https://archive.org/details/@couchtripper9393
This guy Charles has shared 740 episodes of Just a Minute, from the first episode onwards through the decades. To easily download them all, copy that link into Jdownloader and let it do all the work.
https://www.mediafire.com/just-a-minute
This guy has uploaded a good few Radio 4 comedy shows.
https://archive.org/details/@thegolux
Another someone who has shared some good radio comedy
https://archive.org/details/@mcfroogle
If you've got jdownloader running, you can just right-click and "copy link address" for each of these shows and it will sniff all the episodes.
Stick Golden Beryl in your ears for a while and you'll soon be wondering why she wasn't always there.
https://guillermocain.podbean.com/
Loads of stuff.
https://fourble.co.uk/catpodcasts#sketchcomedies