BBC Radio Stations Stopped Playing on Apple Music

Until Monday 3 March I was able to play BBC Radio stations through Apple Music on my iPhone or Siri on HomePod by asking Siri to ‘Play BBC Radio 2’ (for example).

However, since Monday I get the message ‘Unable to Play. There’s a problem playing this station. Please try again later.’ from Apple Music or from Siri ‘Here’s BBC Radio 2 provided by TuneIn.’ then a few seconds later ‘Sorry, there’s a problem with Apple Music’ and the station doesn’t play.

Other radio stations play fine and BBC stations are playing OK directly through TuneIn, so the problem seems to be with Apple Music.

All my devices are running the latest iOS / HomePod OS.

Is there a known problem / issue with BBC stations? Note I only use Radio 2 as an example but other BBC stations are affected too.