[London Lite]

I imagine commercial AM stations, other than talkSport perhaps, will be hurriedly culling their transmission contracts now. Listenership must be tiny.

Unless the local MW licenses are tied to FM ones?

Bauer have closed numerous AM transmitters which have had Greatest Hits Radio on them including Leeds, Bradford, Manchester, Lancashire and Swansea along with Radio City Talk in Liverpool . (There was also 1161 in Hull that briefly had a relay of Magic Radio UK fed from a DAB receiver). Global have closed Smooth Radio AM relays, but still have a substantial network of them still transmitting along with Gold in London, Manchester, Derby, Norttingham, Cambridge and Peterborough.