![Heathrow Express on Twitter: "@stucoates @thetrainline Hi Stu - the ticket you purchased was only valid for travel between Zones 1-6 on the London Underground. We're not part of the TfL network, Heathrow Express on Twitter: "@stucoates @thetrainline Hi Stu - the ticket you purchased was only valid for travel between Zones 1-6 on the London Underground. We're not part of the TfL network,](https://pbs.twimg.com/media/DjbIZ-fXoAAWdDp.jpg)
Heathrow Express on Twitter: "@stucoates @thetrainline Hi Stu - the ticket you purchased was only valid for travel between Zones 1-6 on the London Underground. We're not part of the TfL network,
![Heathrow Terminal 2 (The Queen's Terminal) heathrow express ticket machines, London, England, United Kingdom Stock Photo - Alamy Heathrow Terminal 2 (The Queen's Terminal) heathrow express ticket machines, London, England, United Kingdom Stock Photo - Alamy](https://c8.alamy.com/comp/E5FXX0/heathrow-terminal-2-the-queens-terminal-heathrow-express-ticket-machines-E5FXX0.jpg)
Heathrow Terminal 2 (The Queen's Terminal) heathrow express ticket machines, London, England, United Kingdom Stock Photo - Alamy
![Heathrow Terminal 2 (The Queen's Terminal) heathrow express ticket machines, London, England, United Kingdom Stock Photo - Alamy Heathrow Terminal 2 (The Queen's Terminal) heathrow express ticket machines, London, England, United Kingdom Stock Photo - Alamy](https://c8.alamy.com/comp/E5FXWG/heathrow-terminal-2-the-queens-terminal-heathrow-express-ticket-machines-E5FXWG.jpg)