and M90 in Scotland, and the M20. Vehicles are owned and maintained by various Stagecoach subsidiaries. When branded vehicles are unavailable other Stagecoach vehicles can be used or coaches hired in. Substitute vehicles used have been Dennis Trident 2 and Volvo Olympian double deckers, and Dennis Dart and Volvo B10M single deckers. Stagecoach London double deckers from Leyton garage were often seconded to Megabus until the sale of that company to Macquarie Bank. When using substitute vehicles, there may not always be an onboard toilet, and in such cases rest stops are made. Some journeys are contracted to other operators using non-Megabus liveried vehicles, including Turners Coachways of Bristol, Tetleys of Leeds, Hamiltons of Uxbridge and Compass Royston from Stockton-on-Tees. Fleet history Initially, most routes used buses designed for short journeys that had neither toilet facilities nor luggage space, and each passenger was allowed only one bag. To commence operations, 1990/91 built 3-axle 94 seat Alexander RH bodied Leyland Olympians were purchased from Hong Kong Citybus. Stagecoach had previously owned these buses when it owned Citybus from March 1999 until June 2003. Three-axle Dennis Dragons were allocated to Manchester to Liverpool and Manchester to Leeds services, which ceased operations in 2004. A number of mid-life Volvo B10M coaches temporarily operated various routes, mainly in the South of England, until sufficient Olympians had been prepared for service. Gradually, most of these coaches were taken off Megabus work and used by Stagecoach elsewhere. However, the type made a reappearance at the end of 2005, when they became the mainstays on the services from London to Birmingham and London to Nottingham/Chesterfield. Newer 'high-frills' articulated coaches, with both toilets and reclining seats, were used for the longer journeys between London and Scotland, but these were replaced early in 2005. These coaches have since been refurbished and modified to include beds for an Overnight 'Sleeper' service between London and Glasgow started in late 2011, competing with the Caledonian Sleeper train. In summer 2004, Stagecoach received a batch of Neoplan Skyliners for the Oxford Tube. This displaced 68-seat five-year-old double deck Jonckheere bodied MAN 24.350 HOCLNR-NL coaches, some of which were transferred to Megabus on cross-border services and on services within Scotland. Stagecoach ordered another batch of Neoplan Skyliners, which entered service with Megabus in early 2005. These replaced the articulated coaches used between London and Scotland, and also Leyland Olympians on some other longer distance