London Buses route SL10

London Buses route SL10 is a Transport for London contracted Superloop express bus route in London, England. Running between Harrow and North Finchley bus stations, it is operated by RATP Dev Transit London.

The route partially parallels routes 125 and 183.

History
The route was first proposed by Transport for London in April 2023 as the first proposed new route in the Superloop network of orbital express bus routes. At the time of the consultation, the route was proposed to be numbered X183.

The route was renumbered from X183 to SL10 before it was introduced. Route SL10 was introduced on 25 November 2023. It is operated by RATP Dev Transit London as a variation to its route 183 contract that it parallels between Hendon and Harrow.

Current route
Route SL10 operates via these primary locations:
 * Harrow bus station for Harrow-on-the-Hill station  
 * Kenton station
 * Kingsbury station
 * Hendon station
 * Hendon Central station
 * Finchley Central station
 * North Finchley bus 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.