Similarly, in Canada we have CBC Radio 3 which plays pretty good indie music: https://www.cbc.ca/listen/cbc-music-playlists/56-cbc-radio-3

There are other CBC Music playlists that are surprisingly good too: https://www.cbc.ca/listen/cbc-music-playlists

it is available from outside the UK on the BBC website. alternatively, most (all?) of the BBC radio stream URLs can be found here [1], and consumed with e.g VLC

[1] https://gist.github.com/stengland/8705765