Playing live LBC UK radio on Apple Watch cellular

This problem has been present for a couple of years now. I use my AW when out for a walk or run. I bought the cellular solely so that I could leave my phone at home and listen to LBC radio when out using bluetooth headphones (sad, I know).

However, when I step out and ask siri to play LBC it always seems to play LBC news rather than actual LBC.

Previously I tried a couple of workarounds:

• Saying 'Play LBC UK' or 'Play LBC Radio' whilst still at home. It would seem to play using the phone, through my watch, through my headphones, then when I leave it still plays for some reason. This method worked for about a year.
• Another workaround, if I forgot to do the above, I would try to ask Siri to 'Play LBC Manchester' and for some reason that would work...I learned this tip from another thread on here.

However, right now - none of the above work.

I also tried subscribing to Apple Music. I thought this may be the issue as perhaps LBC needs Apple Music. But no, this does not work either.

It is really driving me nuts. Any suggestions as to how I can make it work, through the watch without having the phone with me. I have a max phone and taking that out in my pocket defeats the purpose of having the cellular watch.

Appreciate any tips or fixes.

Running Apple Watch 6 Cellular. (Would upgrading to a new watch help? Seems a waste of money, but is that the issue?)