SL9
London Sovereign Alexander Dennis Enviro400EV in Harrow in September 2023
Overview
Operator	London Sovereign
Garage	Harrow
Vehicle	Alexander Dennis Enviro400EV
Began service	7 December 2019
Predecessors	Route X140 (2019–2023)
Former operator(s)	Metroline
Night-time	N140
Route
Start	Heathrow Central bus station
Via	Harlington Hayes Yeading Northolt South Harrow
End	Harrow bus station
Service
Level	Daily
Route map Route SL9 corridor Legend Harrow Weald bus garage   N140    140  Harrow bus station   SL9  South Harrow station Northolt Park station Northolt station Yeading White Hart Roundabout Yeading Dilston Close Yeading Willow Tree Lane Hayes the Grapes Ruislip High Street   278  West Ruislip station Ickenham station Hillingdon station Hillingdon Heath Lees Road Hayes End Hayes & Harlington station   140  Harlington High Street Harlington Corner Heathrow Central bus station   N140    SL9    278  This diagram: view talk ← {{{previous_line}}}  {{{system_nav}}}  {{{next_line}}} →

London Buses route SL9, formerly London Buses route X140, is a Transport for London contracted Superloop express bus route in London, England. Running between Heathrow Central and Harrow bus stations, it is operated by London Sovereign.

The route partially parallels routes 140 and 278.

History

The route commenced on 7 December 2019, originally numbered X140, as part of a reorganisation of routes in the lead up to the opening of the Elizabeth line. Route X140 was introduced as a limited stop service between Harrow and Heathrow Central bus stations and as a partial replacement for the all stops route 140, which was withdrawn between Hayes & Harlington and Heathrow at the same time. ^{[1] [2]} Route X140 was initially operated by Metroline.

Upon being put out to tender, on 4 September 2021 route X140 was taken over by London Sovereign's Harrow bus garage. ^{[3] [4]} However, due to delays in the delivery of new Alexander Dennis Enviro400EVs and the refurbishment of the Wright SRM bodied Volvo B5LHs for the route, London Sovereign initially operated it with Wright Gemini 3 bodied Volvo B5LHs. ^[5]

On 26 August 2023, route X140 was renumbered SL9, becoming part of the Superloop network of orbital express bus routes. ^{[6] [7] [8] [9]}

Current route

Route SL9 operates via these primary locations: ^[10]

• Heathrow Central bus station
• Harlington
• Hayes & Harlington station
• Hayes
• Yeading
• Northolt station
• Northolt Park station
• South Harrow station
• Harrow bus station for Harrow-on-the-Hill station

Operation

The route operates at a frequency of a bus every 12 minutes on weekdays and Saturdays and a bus every 15 minutes on Sundays. ^[11] Between the hours of approximately midnight and 5am, the route is covered by an all stops night service N140 running every 30 minutes between Harrow Weald bus garage and Heathrow. ^[12]

References

External links

Media related to London Buses route SL9 at Wikimedia Commons