Is there a bigger/better British band than Radiohead?

Better? Yes, lots. PInk Floyd, Yes, Deep Purple, ELP, Supertramp, ELO, King Crimson and Asia come to mind for those who consider Radiohead a prog band. Then there's The Kinks, Black Sabbath, Iron Maiden, Judas Priest, Tailgunner, Led Zeppelin, Venom, Dire Straits, Uriah Heep, Rainbow (though it's a shame they only did three albums), Orange Goblin, Saxon, Motorhead, Del Leppard, Angel Witch, Diamond Head, Samson, Raven, Hell, Asomnvel, Sweet, Power Quest and many more. As for bigger, definitely however i am not about to look up record sales for various bands and compare them to Radiohead for various bands.