This is due to legal action being taken out against Tune in. The details, and how you can access stations direct is in the linked post;-
https://en.community.sonos.com/music-services-and-sources-228994/tune-in-blocking-foreign-radio-stations-in-the-uk-master-thread-6848128
Hi,
Thanks for that, wasn't aware of this being such an issue.
The stations I am referring to are UK stations so it's just local regions that I am having issues with. This happens on Sonos radio as well as Tune in.
I have Truro as my location, and get Manchester as the Greatest Hits source, as well as some Glasgow, London and Essex stations in my “local” options. But I do see Heart Cornwall, Pirate, West Cornwall Coast FM and a few others as local stations.
There are more choices of local station options using MyTuner Radio rather than TuneIn.
Check your location in settings on Sonos is set as UK.