In pictures: Routemaster retrospective

Although Routemasters may no longer run in revenue-earning service, their chugging presence is likely to endure for many years to come.

When they leave service, the buses are usually sold on to private companies and enthusiasts.

A retired 'RM' can expect either a restful retirement receiving plenty of TLC, or an active old age as a promotional tool for a company eager to exploit their global image as a symbol of London.