|Garage||Stamford Brook (V) |
|Night-time||Night bus N9|
|Start||Hammersmith bus station|
Hyde Park Corner
The Sunday 9 extension was finally removed when Route 23 gained a Sunday service in the late 1960s, although a token service was maintained as far as Aldgate until 14:00 on Sundays to serve the local markets, the afternoon service being curtailed at Aldwych. The Saturday service was also curtailed to Aldwych a few years later, but the Sunday service was renumbered 9A to avoid the unusual bifurcation, being further diverted via Monument and Tower Hill instead of Bank and Leadenhall Street. This variation had been dropped completely by 1990, and the route thus then ran daily from Mortlake to Aldwych with a Monday to Friday extension to Liverpool Street. The whole route was cut back to Aldwych on 18 July 1992, the replacement to Liverpool Street being new route 23.
In the lead up to the introduction of the London congestion charge in February 2003, service levels were increased with MCW Metrobuses drafted in to supplement the AEC Routemasters. On 4 September 2004, crewed operation finished with the AEC Routemasters replaced by East Lancs Myllennium Vyking bodied Volvo B7TL and the route was transferred to Stamford Brook garage, in an economy swap with route 49.
To mark the First World War centenary, the London Transport Museum restored one of only four surviving LGOC B-type buses. The bus being restored used to run on route 9 between Barnes and Liverpool Street from 1914. The restoration cost £250,000, with more than half being spent sourcing original parts.
New Routemasters were introduced on 26 October 2013. The rear platform remains open from Monday to Friday between 06:00 and 18:00 when it is staffed by a customer assistant. In September 2016, conductors were removed from buses on route 9 and buses now operate with drivers only and the rear platform closed. 
On 15 June 2019, the route was re-rerouted via Piccadilly Circus
Route 9 operates via these primary locations:
- Hammersmith bus station for Hammersmith tube stations
- Hammersmith Broadway
- Brook Green
- West Kensington North End Road
- Kensington Olympia station
- Kensington High Street
- High Street Kensington station
- Kensington Palace
- Royal Albert Hall
- Knightsbridge station
- Hyde Park Corner station
- Mayfair Old Park Lane
- Green Park station
- Piccadilly Circus
- Trafalgar Square
- Charing Cross station
- Covent Gardens Southampton Street
- Aldwych Drury Lane/Somerset House
In 1978, route 9 was called the "very best and least expensive tour of London" as it passed Hyde Park, Hyde Park Corner, Green Park, Burlington Arcade, Piccadilly Circus, Haymarket, Trafalgar Square, the National Gallery, Strand, Savoy Hotel, Simpsons of Piccadilly, Fleet Street, Lombard Street and George and Vulture. The current route passes Kensington Palace and Kensington Gardens. It also passes the Kensington Roof Gardens, Royal Albert Hall, Albert Memorial, Hyde Park Barracks, Wellington Arch, Apsley House, New Zealand War Memorial, The Athenaeum Hotel, The Ritz London Hotel, The Wolseley, St James's Palace, National Gallery, Duke of York Column, Nelson's Column, Eleanor cross, Savoy Hotel, Savoy Theatre and Somerset House.
- "Archived copy". Archived from the original on 18 June 2016. Retrieved 19 June 2016.CS1 maint: archived copy as title (link)
- "London's bus riders fear not seeing red". Toledo Blade. 6 August 1991. Retrieved 27 December 2013.
- "London's red double-decker bus, a part of heritage, may become extinct". The Southeast Missourian. 5 August 1991. Retrieved 27 December 2013.
- Bivens, Matt (7 August 1991). "London's double-decker bus may soon be extinct". The Telegraph. Retrieved 27 December 2013.
- Bivens, Matt (6 August 1991). "Double-deckers face extinction in London". Ocala Star-Banner. Retrieved 27 December 2013.
- "Those red double-deckers may be things of the past". The Hour. 9 September 1991. Retrieved 27 December 2013.
- Prynn, Jonathan (12 May 2014). "Route to riches: to see most expensive parts of London, hop on a Number 9". Evening Standard. Retrieved 13 May 2014.
- Blacker, Ken (2007). Routemaster: 1970–2005. 2 (2nd ed.). Harrow Weald: Capital Transport. pp. 118, 170, 171. ISBN 978-1-85414-303-7.
- "The Nine Road (1976)". British Film Institute.
- Peter Noble, ed. (1977). Screen International Film and TV Year Book, Volumes 34-37. Screen International. p. 566.
- "Mayor launches the 'Year of the Bus' to celebrate vital part of London's transport network". TfL. 27 January 2014. Retrieved 27 January 2014.
- "It's the Year of the Bus! Look out for the celebratory silver Boris Bus". TimeOut. 27 January 2014. Retrieved 27 January 2014.
- Majumdar, Debabani (12 December 2013). "'Unsung' London war bus brought back to life". BBC. Retrieved 14 December 2013.
- "1914 double-decker bus restored". Independent. 12 June 2014. Retrieved 24 June 2014.
- Press Release Transport For London
- "London's New Routemaster buses cut 300 conductors". BBC News. 11 July 2016. Retrieved 11 July 2016.
- Route 9 Map Transport for London
- Lo Bello, Nino (2 December 1978). "Bus Nine: Great way to tour London". The Montreal Gazette. Retrieved 27 December 2013.
- "London". Gainesville Sun. 11 March 1990. Retrieved 31 December 2013.
- Porter, Laura. "Number 9 London Bus Route". About. Retrieved 2 January 2014.