London Buses route 21 is a Transport for London contracted bus route in London, England. Running between Holloway and Lewisham Shopping Centre, it is operated by Go-Ahead London subsidiary London Central.
History In 2018, an Optare MetroDecker EV prototype was trialed on the route.
In November 2021, the frequency of the service was reduced from 6-8 minutes to 8-10 minutes.
On 4 February 2023, route 21 was withdrawn between Newington Green and Hoxton and extended to Holloway partially replacing the daytime route 271, following a successful consultation in early 2022.
Current route Route 21 operates via these primary locations: Holloway Holloway Road station Highbury & Islington station Essex Road railway station Moorfields Eye Hospital Moorgate station Bank and Monument stations London Bridge station Borough station Bricklayers Arms Old Kent Road New Cross Gate station St Johns station Lewisham station Lewisham Shopping Centre
Incident 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.
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