London Buses route 274 is a Transport for London contracted bus route in London, England. Running between Islington and Lancaster Gate, it is operated by Metroline.
Route 274 commenced operating on 25 May 1991 between Camden Town and Marble Arch replacing the withdrawn section of route 74 between Camden Town and Baker Street. The route was initially operated by Chalk Farm garage with double-deck Leyland Titans. In September 1992, the route was converted to midibus operation using Plaxton Pointer bodied Dennis Darts. On the closure of Chalk Farm garage in 1993, the allocation transferred to Holloway garage (HT).
On 1 March 1997, the route was extended from Camden Town to Islington and on 1 February 2003, from Marble Arch to Lancaster Gate Station in preparation for the introduction of the London congestion charge.
In June 2001, the route was converted to low floor using Plaxton Pointer 2 bodied Dennis Dart SLFs.
On 26 July 2003, the allocation was transferred from the overcrowded Holloway garage (HT) to King's Cross (KX) garage. On 20 March 2004, route N274 was renumbered 274 making it a 24-hour route. On 12 July 2010, the allocation moved to King's Cross garage (KC).
On 25 June 2011, the route was retained by Metroline with Alexander Dennis Enviro 200 Darts introduced. On the same date, the night service was withdrawn.
- Islington Goswell Road
- Angel Station
- Caledonian Road & Barnsbury Station
- Camden Road Station
- Camden Town Station
- London Zoo
- Baker Street Station
- Marble Arch Station
- Lancaster Gate Station