South and South East of London

Southern Railway - covers rail services in the South London Metro area, London to Brighton and south coast services between Bournemouth, Brighton, Hastings and Ashford.

Connex - train services in south-east London, Kent, Sussex and parts of Surrey, and many bus routes in London and the south-east.

South West Trains - services in Southern England towards South West England
 

West and North West of London

Chiltern Railways - serves the Chilterns area of Buckinghamshire, Oxfordshire and Warwickshire from London through to Birmingham.

First Great Western Link provides frequent services on the important rail artery along the Thames Valley, combining the busy commuter routes between Oxford, Newbury, Reading and London Paddington.

East and North East of London

West Anglia Great Northern Railway - provides services to Hertfordshire and Essex through to parts of East Anglia.

One - serves Essex and East London.

First Great Western - provides services between South and West Wales and Birmingham, London Waterloo and the West Country.

Arriva Trains Wales has an extensive urban network in south and central Wales. The majority of journeys made on the Valley Lines network are to/from Cardiff.

One - also serves Essex and East London.

TransPennine Express - services throughout Yorkshire, Lancashire, Humberside, Northumberland and Durham

Merseyrail - serving the Liverpool suburban area - the Wirral line, extending under the river Mersey, links Liverpool with West Kirby, Ellesmere Port, New Brighton and Chester. The Northern Line links Liverpool with Ormskirk, Kirby, Southport and Hunts Cross.