| 521 | |
|---|---|
 | |
| Overview | |
| Operator | Go-Ahead London |
| Garage | Waterloo |
| Vehicle | Alexander Dennis Enviro200EV |
| Peak vehicle requirement | 15 |
| Status | Defunct |
| Began service | 18 July 1992 |
| Ended service | 29 April 2023 |
| Predecessors | Route 501 Route 513 |
| Night-time | No night service |
| Route | |
| Start | Waterloo station |
| Via | Holborn St Paul's station Cannon Street |
| End | London Bridge bus station |
| Length | 3 miles (4.8 km) |
| Service | |
| Level | Monday to Friday |
| Frequency | About every 2-12 minutes |
| Journey time | 21-34 minutes |
| Operates | 06:29 until 00:33 |
London Buses route 521 was a Transport for London contracted bus route in London, England. It ran between Waterloo station and London Bridge bus station, and was operated by Go-Ahead London.
It was also one of two Red Arrow branded services. In 2016, it became the first battery electric bus route in London, along with route 507.[1]
- ^ Gillett, Francesca (12 September 2016). "First electric buses in central London 'by end of year' as two routes announced". Evening Standard. Retrieved 13 August 2021.