London’s SL15 Superloop Bus Transforms South London Travel 2026

Key Points

• Transport for London (TfL) has confirmed a new Superloop express bus route, the SL15, linking Clapham Junction and Eltham across south London, with services due to start in 2027, subject to delivery plans.
• The SL15 will form part of the wider Superloop orbital bus network, designed to provide faster express-style links between outer London town centres and key transport interchanges.
• Following a public consultation, TfL has decided to proceed with the SL15, with 1,897 Londoners responding and a strong majority supporting the route as more convenient than existing options.
• According to Time Out contributor Jordan Bassett, 91 per cent of consultees believed the SL15 would be more convenient than current services, 84 per cent thought it would cut journey times, and 74 per cent said they would be more likely to use the Superloop instead of a car.​
• The route will operate between Clapham Junction (Falcon Road) and Eltham, broadly following the A205 South Circular and serving 18 stops including Clapham South, Tulse Hill, Forest Hill, Catford and Torridon Road.
• TfL’s consultation report confirms the SL15 will be an express service, stopping only at a limited number of key stops including eight rail interchanges, town centres and busy junctions.​
• The SL15 will run with single-decker buses, unlike many existing Superloop routes which use double-deckers, a decision highlighted in Time Out’s coverage.​
• Service frequency is planned at every 12 minutes during Monday–Saturday daytimes, and every 15 minutes during Sundays, evenings and early mornings.​
• The confirmed stop list includes Clapham Junction (Falcon Road), Clapham Junction (St John’s Road), Clapham South, Clarence Avenue, Streatham Place, Christ Church, Tulse Hill, Croxted Road, Wood Vale, Forest Hill, Kilmorie Road, Catford & Catford Bridge, Catford Town Centre, Torridon Road, Baring Road, Eltham Road, Well Hall Road and Eltham.​
• Eccles Road, which appeared in early route suggestions, has been dropped from the final SL15 alignment after consultation feedback.
• A petition signed by 217 people successfully secured an additional stop at Christ Church on the SL15 corridor, according to Time Out’s report on the consultation outcome.​
• TfL has acknowledged concerns from some consultees about potential increased congestion along the South Circular (A205) and has pledged to review other bus routes and stop usage in Clapham town centre to manage bus flows.
• TfL’s “Have Your Say” materials indicate that a full end‑to‑end journey on the SL15 between Clapham Junction and Eltham could take up to around 75 minutes depending on traffic conditions.​
• The SL15 will complement other proposed and existing Superloop services, including SL6 and plans for SL13 and SL14 elsewhere in London, as part of an ongoing expansion of the network.​
• Local groups and commentators, including Norwood Forum and specialist transport blogs such as Diamond Geezer, have framed the SL15 as a rare “proper orbital” route for south London that aims to improve cross‑borough connectivity.
• Social media posts and local forums have also highlighted the confirmation of an additional stop at Torridon Road/Brownhill Road in connection with the SL15, reflecting grassroots interest in the exact stop pattern.
• Transport‑focused content creators, such as the MostlyBuses YouTube channel, note that TfL’s final consultation report confirms two new stops added and one removed, alongside a start date in 2027, with a precise launch date to follow later.​​
• Overall, the SL15 is being promoted by TfL as a frequent, simple, inclusive and reliable express bus option that could encourage modal shift from private cars to public transport in south London.

South London (South London Times) March 17, 2026 – Transport for London’s new SL15 Superloop express bus route, set to link Clapham Junction and Eltham from 2027, is being billed as a game‑changer for commuters across south London, promising quicker orbital journeys, more direct links between rail hubs and town centres, and a realistic alternative to car travel along the South Circular corridor.

How will the SL15 Superloop reshape travel across south London?

As reported by Jordan Bassett of Time Out London, the SL15 will join the existing family of Superloop services that have been steadily rolled out since 2023 to connect outer London destinations with faster, limited‑stop buses. Bassett notes that Superloop had already proven popular by the end of 2024, with 88 per cent of surveyed passengers saying it was better than regular buses and 93 per cent willing to use it again, a backdrop that helps explain enthusiasm for the new south London link.

TfL’s own consultation summary, published on its “Have Your Say” platform, describes the SL15 as an express route between Clapham Junction and Eltham that primarily follows the A205 South Circular via Tulse Hill and Catford, thereby offering new cross‑river rail connections and town‑centre stops without going through central London.

According to TfL’s consultation materials on the SL15, the core aim is to provide a frequent, simple and reliable Superloop service that focuses on key interchanges rather than stopping at every local bus stop.

The authority has stressed that the SL15 is expected to cut journey times on many orbital trips, especially for passengers who currently rely on slow all‑stops routes or have to change buses multiple times to move between south‑west and south‑east London. In its FAQs, TfL estimates that a full journey along the route could take up to around 75 minutes depending on traffic, but that intermediate trips between hubs such as Clapham, Forest Hill, Catford and Eltham should be notably quicker than at present.

What exactly will the SL15 route cover?

According to the final route description carried by Time Out and reflected in TfL’s consultation report, the SL15 will start at Clapham Junction on Falcon Road, also serving a stop on St John’s Road, before heading east to Clapham South and then tracking broadly along the South Circular corridor.

From there, the route will serve Clarence Avenue and Streatham Place, providing links to the Streatham Hill area, before stopping at Christ Church and Tulse Hill, both significant nodes for rail interchange and local buses.

Continuing east, the SL15 will call at Croxted Road and Wood Vale, then Forest Hill, which offers important London Overground and National Rail connections.

The route then proceeds to Kilmorie Road, Catford & Catford Bridge, Catford Town Centre, Torridon Road and Baring Road, covering a stretch of south‑east London that has long called for better east‑west bus links. Finally, the SL15 will serve Eltham Road and Well Hall Road before terminating at Eltham, connecting with National Rail services and local buses into outer south‑east London.

As noted by local transport blogger Diamond Geezer in a preview of the consultation, the SL15 is unusual in being “a proper orbital” route, designed to ring around the city rather than funnel passengers towards the centre. Norwood Forum, reporting when the public consultation opened, also emphasised that the SL15 would link Clapham Junction and Eltham via the A205 South Circular, picking up key town centres and interchanges on the way.

This alignment means residents in areas such as Tulse Hill, Forest Hill and Catford will gain new direct connections to both south‑west and south‑east transport hubs without the need to travel through central London.

How was the SL15 shaped by public consultation?

As reported by Jordan Bassett of Time Out London, TfL ran a consultation in October in which 1,897 Londoners provided feedback on the SL15 proposals, and the results were overwhelmingly positive in favour of the scheme.

Bassett states that 91 per cent of respondents believed the new route would be more convenient than existing options, 84 per cent thought that it would reduce journey times, and 74 per cent said they would be more likely to use the Superloop than travel by car, signalling a potential shift towards public transport.​

TfL’s consultation report, summarised on its “Have Your Say” site, confirms that the authority has decided to proceed with introducing the SL15 following this feedback and has published responses to key issues raised by residents and transport users.

The report indicates that officials carefully considered suggestions for additional stops or route tweaks and balanced these against the need to maintain express journey times and reliability. Among the most notable outcomes, Time Out highlights that a petition signed by 217 people successfully prompted TfL to add a new stop at Christ Church, demonstrating the impact of local campaigning on the final design.

Which stops were added, removed or adjusted for the SL15?

As reported by Jordan Bassett of Time Out, one of the most significant changes from earlier SL15 drafts is that the service

“will now not serve Eccles Road, as was originally suggested.”

This stop removal appears to be a response to consultation feedback and operational considerations, with TfL seeking to keep the route focused on the most strategic locations. Instead, the final stop pattern emphasises major junctions and rail interchanges which can act as feeders for passengers from surrounding neighbourhoods.

Time Out’s coverage also notes that, alongside the Eccles Road change, TfL agreed to add Christ Church as a stop after receiving a petition backed by 217 signatories, underscoring the route’s responsiveness to local concerns about accessibility.

In parallel, transport‑focused YouTube channel MostlyBuses reports that TfL’s final consultation report confirms the addition of two new stops and the removal of one compared with initial plans, though the video commentary focuses on the broad pattern rather than listing every amendment. Local social media postings, including updates shared in community Facebook groups, have further highlighted the inclusion of an additional Torridon Road/Brownhill Road stop as part of the launch package for the SL15, reflecting strong local interest in serving that junction.​

How often will the SL15 run and what type of buses will be used?

As reported by Jordan Bassett of Time Out London, the SL15 is expected to run every 12 minutes during Monday to Saturday daytimes, offering a high‑frequency express option across south London. During Sundays, evenings and early mornings, the service frequency is set to drop slightly to buses every 15 minutes, which is still significantly higher than many orbital bus routes that currently serve the area.​

Time Out’s article also highlights that the SL15 will buck the trend of many existing Superloop routes by using single‑decker buses rather than double‑deckers. While this may disappoint some passengers who enjoy the elevated views from top decks, the use of single‑deckers could be related to road space constraints, bridge clearances or anticipated demand patterns along parts of the South Circular corridor.

TfL’s broader Superloop documentation stresses that all routes, including the SL15, are intended to be fully accessible and inclusive, with modern low‑floor vehicles and space for wheelchairs and buggies.

What concerns have been raised about congestion and local impact?

In his Time Out report, Jordan Bassett notes that while most respondents supported the SL15, “some respondents worried about increased congestion along the A205 South Circular,” reflecting longstanding fears that more bus services could slow general traffic and extend journey times for all road users. TfL’s consultation response acknowledges these concerns, stating that it will review other routes and stop allocations in places such as Clapham town centre to ensure buses are “spread evenly across stops” and to help manage flows on busy stretches.

TfL’s “Have Your Say” pages on the SL15 reiterate that the authority will continue to monitor traffic conditions and coordinate signal timings, bus priority measures and route planning to limit any negative knock‑on effects.

The agency argues that by attracting drivers out of cars and onto the Superloop, the SL15 could in fact reduce overall vehicle numbers, although this depends on how many people switch modes once the service is up and running. Local forums such as Norwood Forum have also stressed the potential benefits for air quality and road safety if more trips are made by high‑capacity buses instead of private cars.

How does the SL15 fit into the wider Superloop network?

TfL’s consultation page for the SL15 places the new route firmly within the context of a London‑wide Superloop expansion, alongside other proposals such as SL13 between Hendon and Ealing Broadway and SL14 between Stratford bus station and Chingford Hatch.

The authority describes the Superloop family as a set of frequent, limited‑stop routes that orbit the capital and link into radial Tube, Overground and rail lines, thereby helping people travel between outer boroughs without detouring through central London.​

Local coverage by Norwood Forum underscores that the SL15 is intended to plug a conspicuous gap in south London’s orbital public transport, complementing other Superloop and express bus links elsewhere in the city.

Commentators such as Diamond Geezer have argued that, if successfully implemented in 2027, the SL15 could significantly improve connectivity for communities along the South Circular by connecting Clapham Junction – one of the country’s busiest rail stations – directly with Eltham and intermediate hubs. Transport‑focused creators like MostlyBuses add that with the consultation now concluded and the route confirmed, attention will turn to the exact launch date in 2027, detailed timetables and any fine‑tuning before buses start running.​

When will passengers be able to use the SL15 and what happens next?

TfL’s SL15 consultation FAQ states that, subject to the outcome of the consultation and wider planning, the authority “may introduce the SL15 in 2027,” a timeframe that has since been reinforced by subsequent public statements and coverage. Jordan Bassett’s Time Out article reports that TfL has now confirmed the SL15 is “due to come into operation in 2027,” although a precise launch date has not yet been made public. Similarly, the MostlyBuses YouTube channel notes that TfL’s consultation report confirms a 2027 start, with a specific launch date expected to be announced later this year.​