The New Routemaster, originally referred to as the New Bus for London and colloquially as the Borismaster or Boris Bus, is a low-floor hybrid diesel–electric double-decker bus operated in London, England. Designed by Heatherwick Studio and manufactured by Wrightbus, it is notable for featuring a "hop-on hop-off" rear open platform similar to the original Routemaster bus design but updated to meet requirements for modern buses to be fully accessible. It first entered service in February 2012 with Arriva London on route 38.