Thanks for the input guys.
I was talking to some folks in the media today and received pretty much the same story
As an unknown the chances of having a script accepted are less than 1% and even if you're known the chances don't raise that much higher. Even worse is the issue of the final payment at the end of the day - it's not brilliant.
Oh well, perhaps I'll put it in my retirement projects bin. They did like the idea though - but I suppose they have to say that!
Mike