its not always those who r particularly large in shape who take up space on buses. Wot about the selfish teenagers who think it smart 2 hog seats, those wiv bags that obviously need a seat, those whove had too much 2 drink or not enuff sleep who require xtra space 2 roll their heads and sway around a bit? There are too many annoyances who are worse than "fat" people. Id say make the nuisance travellers pay :-)