There was a commercial digital radio station that audio for while, however they appear to have gone out of business.
And in these days of digital downloads, podcasts etc, I'm not actually sure it is really needed or desirable. The overall sector is growing healthily, as witnessed by BF, Audible, Bafflegab, etc
I don't think radio is needed as an outlet, I think the sector as a whole would move forward and expand from where it is without the need of another outlet.
"One day I shall come back. Yes, I shall come back. Until then there must be no regrets, no tears, no anxiety. Just go forward in all your beliefs and prove to me that I am not mistaken." RIP Jason Ward 1969-2019
I did think about mentioning RTÉ, but as they are not in Britain I didn't bother!
OneWord was the UK digital radio station that Jason probably meant, but they went out of business around 2007 when C4 withdrew their funding. It's programmes were rumoured to have had a very low listenership. I used to listen to some audiobook readings on OneWord but I never missed it when it was gone.