London Buses route H20 is a Transport for London contracted bus route in London, England. Running between Ivybridge and Hounslow, it is operated by Abellio London.
Route H20 commenced operating on 18 March 1989 between Hounslow Civic Centre and Ivybridge Estate via Bell Corner - Whitton Road - Heath Road - Central Avenue - Hall Road - Worton Road - Twickenham Road - Mogden Lane - Summerwood Road (return direct to Twickenham Road) as a Monday to Saturday service. The route was initially operated by Westlink using CVE Omni's.
In 1995, the route was rerouted to double run via Tesco.
In March 1999, the route was retained by London United using MCW Metroriders.
In November 1999, the route passed to Tellings-Golden Miller operating from their Byfleet (TG) garage and was converted to low floor operation using Plaxton Pointer 2 bodied Dennis Dart SLFS.
In 2000, the allocation was transferred to Twickenham (TF) garage.
In 2004, a Sunday service was introduced.
In 2011, the route was retained by Abellio London.
On 19 November 2016, the route was retained by Abellio London.
In November 2016, the Plaxton Pointer 2 bodied Dennis Dart SLFs were replaced by brand new Enviro 200 MMC bodied Alexander Dennis E20D's.
- Ivybridge Twickenham Tesco
- Maswell Park
- Hounslow Central Station
- Hounslow Civic Centre