NetRadio UK is a program designed for Mac that lets you listen to various radio stations from the United Kingdom. You can use this application whenever you get tired of listening to the same songs with iTunes or just wish to play music that's now popular in the UK.
Once you launch the utility on your Mac, a new icon is added to your Menu Bar. From there you can choose the radio station you like, start or stop streaming, and set up the program to automatically start at system launch.
Another good aspect about this radio broadcasting application is the fact that it uses minimum CPU resources while streaming.
However, in my testing, it failed to stream certain radio stations. Also, the program doesn't come with an integrated audio volume adjusting bar (you need to increase or decrease system noise level).
All in all, NetRadio UK is an application that comes without a price tag and is very simple to use. But if you don't want to install a third-party app to listen to radio, I'd recommend that you use iTunes broadcasting tool which lets you choose from various radio stations.