FStream is a brilliant free app in the iTunes App Store. Once downloaded you can select from hundreds of stations in the Presets section or add your own in by going to Favorites > Edit > Add new webradio then fill in the Name, URL, Format and Bitrate.

Thanks to a review in the App Store I was able to add in BBC Radio One by inputting the following:

Name: BBC Radio One
URL: http://www.bbc.co.uk/radio1/wm_asx/aod/radio1.asx
Format: WMA
Bitrate (kbs): leave this empty

BBC Radio 1, 2, 3 and 4 are all available, so if you want Radio 2 then simply change the URL to http://www.bbc.co.uk/radio2/wm_asx/aod/radio2.asx or 3 or 4, whatever your listening preferences are. If you want BBC Radio 6 then do everything as above but the URL is different: http://www.bbc.co.uk/radio/listen/live/r6.asx I am a very rare listener to any of the BBC Radio stations, but it’s good to know I can get them. And the best part about FStream is you can even record what you’re listening to on the radio!

My discovery of FStream came from a retweet posted by O2UKOfficial on Twitter – the only re-tweet I have ever received that has actually been of benefit/interest to me in some way. I guess one out of a million had to in the end