Heathrow Southern Railway brings more trains to Heathrow Airport and creates a new route for commuters

Projected Rail Journey Times enabled by Heathrow Southern Railway

via the green line

Subject to decisions by organisations controlling passenger operations, we would expect that via the green line: Basingstoke/Guildford – Woking – Heathrow – Paddington 
Trains would operate every half hour from Basingstoke, Farnborough, and Guildford, and every 15 minutes from Woking, to Heathrow, with journey times faster than road. Heathrow Southern Railway is more than just an airport rail link as after Heathrow these trains would continue to Old Oak Common and Paddington creating new connections to HS2 and the Elizabeth Line. 

Some trains could set out from as far away as the Solent or Dorset. 

via the yellow line

Subject to decisions by organisations controlling passenger operations, we would expect that via the yellow line: Heathrow – Staines – Clapham Junction – Waterloo 
Services would be fully integrated with the South Western network via Staines-upon-Thames, creating four high capacity, direct trains per hour between London Waterloo and Heathrow, half via Richmond and half via Hounslow. 

Via the blue line: Staines-upon-Thames – Heathrow – Old Oak Common – Paddington – the West End – the City – Docklands
Direct services on TfL’s highly successful Elizabeth Line, opening up many new travel opportunities to and from Staines-upon-Thames.