The BBC deletion is now being clarified although no schedule of closure dates has been released.
https://www.bbc.co.uk/mediacentre/articles/2021/next-phase-of-changes-to-some-local-bbc-radio-medium-wave-services
The closure of 657kHz Wrexham (which squashed BBC World Service in North West England on 648kHz) will mean that at night presumably listeners in the cities of Manchester, Liverpool and Birmingham can enjoy Radio Caroline from Orfordness.
I also am puzzled why the nationwide Lisnagarvey 1341khz outlet is being closed when the 810khz Radio Scotland and 882kHz Radio Wales 100KW transmitters remain on air.
Also, it appears that AM broadcasting from Wales will end.
Dan Goldfarb, mwmasts groups.io (2021-04-15)