Go Ahead London bus LX59 CZP.jpg
OperatorLondon Central
GarageNew Cross (NX)
VehicleNew Routemaster
Night-timeNight bus N21
ViaNew Cross
Old Kent Road
Bricklayers Arms
London Bridge
Highbury & Islington

London Buses route 21 is a Transport for London contracted bus route in London, England.[1] Running between Holloway and Lewisham, it is operated by London Central.

The route is operated by New Routemasters.


In 2018, a Metrodecker EV prototype from Optare 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 re-routed to serve Nag's Head in Holloway instead of Newington Green, partially replacing the daytime route 271, following a successful consultation in early 2022.[4]

Current route

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]


  1. ^ "21 bus route". Transport for London. Retrieved 2022-01-20.((cite web)): CS1 maint: url-status (link)
  2. ^ Dougall, Emily (2020-11-24). "Optare celebrates fifth Metrodecker EV order". CBW. Retrieved 2022-06-22.
  3. ^ Mitchell, Sophie (2022-01-18). "Campaign to keep the 21 bus route". Hackney Gazette. Retrieved 2022-01-20.
  4. ^ "Proposed changes to routes 21, 143, 263 and 271" (PDF). TfL Have Your Say. 2022-03-21. Retrieved 2023-01-18.
  5. ^ "Route 21 Map". Transport for London. Retrieved 4 February 2023.
  6. ^ Morrison, Sean (2017-04-05). "Bus wedged across street in City 'like scene from Austin Powers'". www.standard.co.uk. Retrieved 2022-01-20.