Oh, go for it! Have you see the radio writing tips (http://www.bbc.co.uk/writersroom/insight/radiowriter_tips.shtml) on the BBC website? There are some radio drama guidelines (http://www.bbc.co.uk/writersroom/writing/radiodrama.shtml) too, as well as radio script formats (http://www.bbc.co.uk/writersroom/scriptsmart/formats.shtml). Good set of resources.