London Buses route 40 is a Transport for London contracted bus route in London, England. Running between Dulwich and Clerkenwell Green, it is operated by London Central.
When the London Passenger Transport Board took responsibility for London's bus operations on 1 July 1933, route 40 was an established route operating from Camberwell Green to Wanstead via Elephant & Castle, London Bridge, Aldgate, Limehouse, Canning Town and Forest Gate.
On 12 October 1938, the route was extended from Camberwell to Herne Hill via Denmark Hill.
On 27 January 1965, it was withdrawn except during weekday peaks between Herne Hill and Aldgate and replaced by route 40A.
From 18 April 1970, route 40 only operated on weekends.
On 22 April 1978, it resumed weekday operations operating between Herne Hill and North Dulwich.
On 24 April 1982, it was withdrawn between Poplar and North Woolwich.
On 23 November 1991, route 40 was diverted at Limehouse to Canary Wharf. It was extended to Poplar on 9 May 1992 and again to Blackwall Station on 25 September 1993. At the southern end it was diverted at Camberwell Green to Denmark Hill from 12 March 1994. With the opening of the Jubilee line, on 20 May 1999 it was withdrawn between Aldgate and Blackwall.
In July 2002, Plaxton President bodied Volvo B7TLs were introduced to convert the route to low floor operation.
On 2 May 2009, it passed to Travel London operating from their Walworth garage (WL) with brand new Alexander Dennis Enviro 400s introduced.
On 21 May 2009, the route was included in the sale of Travel London to Abellio London.
On 30 April 2016, the route passed to London Central operating from their Camberwell (Q) garage with brand new MCV EvoSeti bodied Volvo B5LHs introduced.
On 15 June 2019, the route was withdrawn between Aldgate and Elephant & Castle and rerouted to Clerkenwell Green via Blackfriars Bridge and Ludgate Circus.
Route 40 operates via these primary locations:
- Dulwich The Plough
- East Dulwich
- King's College Hospital
- Denmark Hill
- Camberwell Green
- Elephant & Castle
- Southwark Station
- Ludgate Circus
- Farringdon Road Clerkenwell Road