London Buses route SL9

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

SL9
London Sovereign Alexander Dennis Enviro400EV at Heathrow Central bus station in August 2023
Overview
OperatorLondon Sovereign
GarageHarrow
VehicleAlexander Dennis Enviro400EV
Began service7 December 2019
PredecessorsRoute 140
Route 278
Former operator(s)Metroline
Night-timeRoute N140
Route
StartHarrow bus station
ViaSouth Harrow
Northolt
Hayes
Harlington
EndHeathrow Central bus station
Service
LevelDaily

The route has two stopping service equivalents, routes 140 and 278.

History

Route X140 commenced on 7 December 2019 as part of a reorganisation of routes in the lead up to the opening of the Elizabeth line partly replacing route 140.[1][2] It 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]

Due to delays in the delivery of new Alexander Dennis Enviro400EVs for the route, London Sovereign initially operated it with Wright SRM 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]

References
  1. New route X140 - Limited stop service between Harrow and Heathrow Airport Transport for London 7 December 2019
  2. RTs return to Heathrow for route 140 farewell Buses issue 778 January 2020 page 22
  3. TfL contract awards give boost for zero-emission operation Route One 3 November 2020
  4. Latest tendered service awards Buses issue 789 December 2020 page 21
  5. RATP shuffles fleet Buses issue 800 November 2021 page 22
  6. Third London Superloop route to start as X26 becomes SL7 Route One 18 August 2023
  7. Route X140 renumbered - 26 August 2023 Transport for London
  8. "Superloop: West London express Heathrow to Harrow bus service launched". BBC News. 2023-08-26. Retrieved 2023-08-28.
  9. Toms, Adam (2023-08-26). "New Superloop bus route launched as TfL says it's 'more than just a paint job'". MyLondon. Retrieved 2023-08-28.
  10. Route SL9 Map Transport for London
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