This was discussed previously, but this is because of a court case that Warner Music and Sony brought against radio streaming app TuneIn Radio. They argued that streaming stations outside of the UK for listeners inside the UK through the app, while using in-app advertising, was a copyright infringement.

This has had a chilling effect on other radio streaming platforms, which have all restricted foreign radio stations on their platforms while geolocated inside the UK.

https://www.mishcon.com/news/court-of-appeal-upholds-copyrig...