These operations were subsequently transferred to a new division, Thamesway Buses,[2][better source needed] before being recombined with Eastern National in the late 1990s as First Essex.

In March 1996, the operator had additionally acquired Southall based London Buslines from the Q-Drive group for £7.65 million (equivalent to £18,137,000 in 2023).

[citation needed] On 8 July 1998, the FirstGroup purchased former CNT Group subsidiary Capital Citybus from its management team for £14.1 million (equivalent to £31,339,000 in 2023).

[8][better source needed] As a result of the loss of tendered bus service contracts, in December 2007, First London's Orpington garage, which had been established by CentreWest in 1995, was sold to Metrobus, along with its routes and 35 buses.

In December 2024, the FirstGroup announced that they had agreed to purchase the assets and operations of RATP Dev Transit London for £90 million.

In June 2013 Alperton, Greenford, Hayes, Uxbridge and Willesden Junction were sold to Metroline and Atlas Road and Westbourne Park to Tower Transit.

Greenford bus garage is part of a Ealing London Borough Council depot and was first used in March 1993 as a midibus base.

The standard vehicles the garage in the late 1990s were Wright bodied Renault midibuses and Marshall minibuses, however both types had a bad reputation and did not last long in the CentreWest fleet.

From late 2003 until 14 March 2009, Ealing Community Transport operated London Buses route 195 from the Greenford depot using garage code EY.

Alperton garage was enlarged between 1976 and 1978, the extension of which encompassed an adjacent former Underground substation, as well as the site of London Transport's Lifts and Escalators department.

The new garage, located next to Uxbridge tube station and occupying the lower ground floor of a multi-use development, opened in late 1983.

[20] After passing to the CentreWest subsidiary in 1989, Uxbridge garage began operating the U-Line network of local routes using 16 seater Alexander bodied Mercedes-Benz midibuses in an initiative by London Regional Transport.

[17] Uxbridge garage also operated the busy routes 207 and 607, the latter of which received a fleet of refurbished East Lancs Greenway bodied Leyland Nationals branded for the service in 1992,[21] which themselves were replaced with 15 Northern Counties Palatine II bodied Volvo Olympian double-deckers during 1996 to aid with capacity and frequency upgrades.

[22] In 1994, the garage was allocated some of London's first low-floor buses, these being Wright Pathfinder bodied Dennis Lance SLFs with CentreWest branding for route 222.

[24] Originally, the garage allocation consisted of AEC Routemasters, and a small number of Daimler Fleetlines to B20 "quiet" specification for Route 18.

This brand employed 16 seater Alexander bodied Mercedes-Benz 811D midibuses in an initiative by London Regional Transport to increase the frenquency of the two routes by 60% at peak times.