Derived from the former London United Tramways, operator of trams and trolleybuses in west and south west London, London United commenced operating on 1 April 1989 as one of the twelve operating subsidiaries of London Buses, prior to privatisation. In 2009 Transdev were in negotiations to merge with Veolia Transport and as part of the resulting agreement it was agreed that the RATP Group, a minority shareholder in Transdev, would take over some of Transdev's operations, resulting in London United transferring to the RATP Group. Route 10 commenced operations on August 13, 1988, just prior to the formation of London United, replacing the old Route 73 and operating between Kings Cross and Hammersmith.Between February 2003 and January 2010, Route 10 was operated by First London but then reverted to Transdev/London United operation until November 23, 2018 when, as part of a programme reducing the number of bus routes traversing Oxford Street, route 10 ceased running. LTZ 1148 carries Fleet No. LT148 in the RATP Group's London United bus company fleet, joining from first registration on February 1, 2014 and operating from Stamford Brook Garage once the Wrightbus new Routemasters were introduced to the route on April 26, 2014. LTZ 1148 operated over Route 10 until the TfL rerouting to serve Russell Square station on June 25, 2016, at which time the vehicle was switched to Route 9.