| 21 | |
|---|---|
|   | |
| Overview | |
| Operator | London Central (Go-Ahead London) | 
| Garage | New Cross | 
| Vehicle | New Routemaster | 
| Night-time | N21 | 
| Route | |
| Start | Lewisham Shopping Centre | 
| Via | New Cross Old Kent Road Bricklayers Arms London Bridge Moorgate | 
| End | Holloway | 
London Buses route 21 is a Transport for London contracted bus route in London, England. [1] Running between Holloway and Lewisham Shopping Centre, it is operated by Go-Ahead London subsidiary London Central.
In 2018, an Optare MetroDecker EV prototype was trialed on the route. [2]
In November 2021, the frequency of the service was reduced from 6-8 minutes to 8-10 minutes. [3]
On 4 February 2023, route 21 was withdrawn between Newington Green and Hoxton and extended to Holloway partially replacing the daytime route 271, following a successful consultation in early 2022. [4]
Route 21 operates via these primary locations: [5]
 
   
  
  
   
  
  
   
  
   
  
   
   
  
  
   
   
  
 On 1 April 2017, a number 21 bus blocked the street in Cornhill as it became stuck after mounting the curb during an attempted three-point turn. [6]