First Bus London

First Bus London
Wright Gemini 3 bodied Volvo B5LH on route E3 in Chiswick in March 2025
ParentFirstGroup
FoundedFebruary 28, 2025 (2025-02-28)
HeadquartersLondon
Service areaGreater London
Service typeBus operator
Depots10
Fleet982 (February 2025)
Fuel typeDiesel and electric
Managing directorsColin Brown
Bill Cahill
Websitewww.firstbus.co.uk

First Bus London is a bus operator running services across Greater London, England. It is a subsidiary of FirstGroup, operating buses under contract to Transport for London, and was formed with the purchase of RATP Dev Transit London from RATP Group in 2025.