https://www.livehdtv.com/ulke/united-kingdom/ is the website but it often errors out. hypnotix is on my linux mint thinkpad but it can’t seem to load anything.
There are other streaming sites that you can use if you know specifically what show you want to watch. Not good for finding British TV, but definitely good for streaming it. DM me.
Not sure if get-iplayer is of any help here but for BBC it’s amazing (think you need a VPN outside the UK).
They have been quite diligent in blocking VPN. I haven’t been able to watch iplayer in years…