Wasn't Spirit radio 549 unlicenced ? Pirate in other words. Maybe I'm thinking of something else. I Seem to remember it being listed as such. They are still on air licenced on FM.
It would seem a bit strange to seek to broadcast on Medium wave in a country which no longer uses the band so there would be little chance of listeners finding any new station that appeared on it. I guess they are mainly hoping for some overspill into the north western area of the UK.