The Labour leader, Jeremy Corbyn, has spoken of the importance of local radio during an interview with Blackpool station Radio Wave.
Wireless Group's Belfast-based station U105 has gone on digital radio for the first time this week.
Former talkRADIO evening show presenter Jonny Gould has left the station less than a year and a half after it launched.
More changes at Signal Radio as it emerges Johnny Owen will leave the AM station's weekday schedule in the summer.
Andy Miles has been replaced on breakfast in Swansea by Leigh and Claire.