TfL Expands Superloop with New SL15 Route

Transport for London expands Superloop network with SL15 express bus route for outer London

2026-04-01, Moovit News Team

TfL Adds SL15 Route to Superloop Express Network

London commuters have a new express bus option as Transport for London expands its Superloop network with the SL15 route. Transit officials confirmed the addition, though they haven't announced a specific launch date. The expansion continues TfL's effort to provide faster orbital connections across outer London, though details about the route's exact path and service frequency weren't immediately available.
Red double-decker express bus with Superloop branding on London street with modern buildings in background

Superloop Network Background

The Superloop network represents TfL's initiative to create high-frequency express bus routes connecting outer London areas without requiring travel through central zones. Officials said the network aims to reduce journey times for orbital trips across the capital. The SL15 joins existing Superloop routes that have been rolled out over recent years, though TfL hasn't released ridership figures for the expanded network. Transit agencies typically design express routes to complement existing local bus service while offering faster alternatives for longer-distance trips.

Route Details and Service Parameters

Transit officials outlined the SL15 as an express route but didn't provide specific information about which neighborhoods or major destinations it will serve. The agency hasn't said how many stops the route will include or what the expected journey time will be from end to end. TfL typically operates Superloop routes with limited stops compared to local bus service, allowing for faster travel times. Officials said the route is designed to improve connectivity in outer London, but specific details about service hours and frequency weren't available by publication time.
London bus stop with Superloop route map and digital arrival board showing express service times

Implementation Timeline

TfL confirmed the SL15 expansion but hasn't provided a specific launch date for the new route. The agency typically announces service changes several weeks in advance to allow riders to plan accordingly, though whether that timeline will apply to the SL15 wasn't clear from available information. Officials said they'll release additional details about the route before service begins.

Impact on London Riders

The SL15 addition will provide London commuters with another express option for orbital travel across outer boroughs, officials said. Riders who currently make multi-bus journeys or travel through central London to reach outer destinations may benefit from the new route. Moovit provides real-time updates and route planning for Transport for London's Superloop network and all bus services across the capital.