rinse fm runs both. Good dance music on both. By far not the only web radio out there but both were originally pirate radio stations that later became "legitimate" ones, which I think is neat.
I'm not normally out using web radio but the website seems to work quite well.
But if you're like me and might want to load the player in mpv instead of using a webpage, I'll save you the time of digging in network inspector.
Rinse: https://streamer-uk.rinse.fm:8443/stream
Kool: https://admin.stream.rinse.fm/proxy/kool/stream
I literally want a dedicated device in my living room for Media now just so I can throw this on the speakers easier.
As much as I'd love to make it a "look at what you can do with a >$50 dollar mini PC" project, I've already got a pi 400 sitting out there being used mostly just for burning CDs. It will probably get repurposed a bit.