hi tom robinson has a show on bbc6music where he plays unsigned bands here is the link to give his production team a chance to listen to your original songs and perhaps get airplay. http://www.bbc.co.uk/6music/shows/tom_robinsons_introducing/recommend.shtml i understand it is open to bands the world over.
the bbc also has an upload portal that lets your songs be heard by production teams on their various channels this is only open to uk acts though. here is the link http://www.bbc.co.uk/music/introducing/uploader/
if you upload or suggest a song you will get a response to say they have recieved it, if they listen to it you will get a response to say they have listened to it and may play it, then its fingers crossed. i say go for it, tom robinson has played 3 or 4 of my songs and collaborations and let me tell you its a bloody good feeling especially when gives a positive comment afterwards.
so why not give it a try.