One of the most interesting traditions in British bus scene is registering buses with old, or we call it, cherished registrations. This is particularly common to registrations that were once held by Routemasters in London, and found their way onto more modern buses:
In many case, the registration is transferred to newer vehicles even thought the Routemaster in question was still in service, as demonstrated by London Central's NV60, which nicked the reg "260CLT" off RM1260:
In recent years, this tradition has been discontinued in many places as these cherished plates are snapped up by managers of various bus operators for their cars. In London, the most enthused operator to continue this practice is Arriva London:
A number of former RM registrations also survived outside London as well, notably with Stagecoach:
...and these registrations would carry across to newer vehicles as time goes by: