London Buses route SL4
| SL4 | |
|---|---|
| Overview | |
| Operator | Blue Triangle (Go-Ahead London) |
| Garage | Henley Road |
| Vehicle | BYD BD11 |
| Peak vehicle requirement | 18 (April 2025) |
| Began service | 7 April 2025 |
| Route | |
| Start | Grove Park station |
| Via | Lee Blackheath Leamouth Canary Wharf |
| End | Westferry Circus |
| Length | 7 miles (11 km) |
| Service | |
| Level | Daily |
| Frequency | Every 8-15 minutes |
| Journey time | 38-63 minutes |
| Operates | 05:00 until 01:34 |
London Buses route SL4 is a Transport for London contracted Superloop express bus route in London, England. Running between Grove Park station and Westferry Circus, it is operated by Go-Ahead London subsidiary Blue Triangle.
The service is one of three bus routes to run through the Silvertown Tunnel, alongside route 129 and the Silvertown Tunnel cycle shuttle.