Some digital radio listeners may have noticed that several stations are now broadcast in mono instead of stereo. For broadcasters it is a question of quality versus quantity.

Many countries in Europe also have DAB Digital Radio, so if you travel to Ireland or Germany you will be able to receive digital radio in your car or with a personal radio.

A small range of hi-fi separates with built-in digital radio are available from recognisable brands including Yamaha and Onkyo.

There are currently no smartphones on sale in the UK with DAB or DAB+ digital radio. You can listen to radio stations on your smartphone with a range of apps, including Radioplayer and TuneIn.