Unable to listen to BBC radio on iTunes

The BBC decided to pull all of their generic Internet Radio services from iTunes many years ago. You can use the https://www.bbc.co.uk/iplayer website or their custom apps for smart devices.

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I believe that you can listen to BBC Radio through Apple Music.

Be aware though, that Apple Music is a subscription service, so if you already have music in your iTunes Library, that you have purchased, you may not want to use Apple Music. Even then, there may be restrictions on BBC Radio, dependent upon which country you are in.

Of course, you may not wish to pay out for a monthly subscription either.