Category
page 1Railway operators in London
London Overground
suburban rail network in Greater London and Hertfordshire
Heathrow Express
open-access train operating company in the United Kingdom
Elizabeth line
urban and suburban rail in London, UK
Gatwick Express
high-frequency rail passenger service between London Victoria and Gatwick Airport
Great Western Railway
train operating company in Great Britain
Southeastern
British train operating company in South East England
Chiltern Railways
transport company
Stansted Express
London Liverpool Street to Stansted Airport train
c2c
Former British train operating company
Greater Anglia
former train operating company in Great Britain (2012–2025)
Heathrow Connect
train service in London
Southern
brand name used by Govia Thameslink Railway
First Capital Connect
train operating company in the United Kingdom

Silverlink
Silverlink was a train operating company in the United Kingdom owned by National Express that operated the North London Railways franchise from March 1997 until November 2007. At the end of 2007, Silverlink Metro services were taken over by London Overground and Silverlink County services were taken over by London Midland.
South West Trains
train operating company in England, 1996–2017
Govia Thameslink Railway
British train operating company
National Express East Anglia
former East Anglian train operating company
West Midlands Trains
British train operating company (2017–2026)
South Eastern Trains
former British train operator
West Anglia Great Northern
former English train operating company
South Western Railway
British train operating company (2017–2025)