TfL Expands Superloop with SL15 Express Route

TfL confirms SL15 Superloop express bus linking Clapham Junction to Eltham via A205 in 2027

TfL Adds SL15 Express Bus on South Circular

South London riders will get faster trips across the A205 South Circular when Transport for London launches the SL15 Superloop route in 2027. The limited-stop express service will connect Clapham Junction and Eltham through Tulse Hill, Catford, and Forest Hill, linking eight rail stations along the corridor. TfL confirmed the route March 10 after 91 percent of 1,800 consultation respondents backed the plan.

Context & Background

The SL15 expands TfL's Superloop network, which provides express bus services across outer London with fewer stops than traditional routes. The service is designed to improve capacity along the A205 corridor without replacing existing all-stops bus routes, according to the transit agency. Officials said the route addresses demand for faster cross-town connections in areas where rail options are limited. TfL made some changes to the original plans following public feedback during the consultation period.

Key Details

Buses will run every 12 minutes during weekdays and Saturdays, and every 15 minutes during evenings, Sundays, and early mornings, TfL said. The route will operate seven days a week and connect multiple existing bus routes along the A205 corridor. All vehicles will feature step-free access, dedicated wheelchair spaces, USB charging ports, and onboard travel information screens. The service is designed to offer improved interchange options at the eight rail stations along the route.

Timeline & Implementation

TfL expects to launch the SL15 in 2027, though officials haven't announced a specific date. The agency said it will confirm infrastructure changes, stop details, and final operating patterns before the route's introduction. Officials didn't provide a timeline for when those additional details will be released.

Rider Impact & Moovit

Riders along the A205 South Circular will see reduced travel times between Clapham Junction and Eltham once the service begins, with the express format skipping stops served by existing routes. The route will provide new direct connections between south London neighborhoods that currently require transfers. Moovit provides real-time updates and trip planning for London's bus network, including Superloop routes.