19000 "Spirit of London" is an Alexander Dennis Enviro400 double-decker bus which was first used in London in October 2005. Originally using fleet number 18500, "Spirit of London" was built as the replacement for the bus destroyed in Tavistock Square during the 7 July 2005 London bombings, killing 13 passengers. "Spirit of London" was also the first production Enviro400 built by Alexander Dennis. Throughout its time in service, "Spirit of London" has served as a tribute to the victims of the 7/7 attacks.