Sci-fi writers. Larry Niven's Swiftian 'Another Modest Proposal' suggests making coins out of it, thus improving the flow of wealth (you would spend radioactive money pretty quick) and ensuring the richer you get the more likely you are to disappear in a flash of white light.
Obviously I would prefer the opinion of cycling pressure groups but other than that I quite like Mensa for the job. If anyone can make the right decision it's going to be Carole Vorderman and professional domino toppler Bob Specta.
