|Vehicle||Enviro 400EVs and New Routemasters|
London Buses route 4 is a Transport for London (TfL) contracted bus route in London, England. It runs between Archway and Blackfriars and is operated by Metroline.
On 25 September 1993, the contract for route 4 was won by London Suburban Bus, who operated the route with Leyland Titans.
On 27 April 1995, route 4 was included in the sale of London Suburban Bus to Metroline and in March 2000 to DelGro Corporation.
In April 2019, TfL announced that route 4 would be shortened between Waterloo and New Change and extended to Blackfriars via Queen Victoria Street instead, with the change scheduled to take effect in June of that year.
Route 4 operates via these primary locations: