I doubt you are allowed to your Heathrow Express ticket on TFL Rail. Please check with TFL customer contact centre on 0343 222 1234
Yes.. You would anyway need to have a zone 1 to 9 TC to get to Amersham from Heathrow. Now your z1to9 TC will cover your journey on TFL rail (earlier Heathtow connect) between Heathrow T4 and paddington. As earlier you would need to purchase a separate ticket on Heathrow connect.
Will this make it any cheaper to get to Amersham?
I have a Heathrow Express ticket (Advance Purchase), and was wondering if I can use it on a TFL Rail train instead? Reason why I want to do this is because I want to travel from Ealing Broadway to Heathrow now, whereas I had originally planned to travel from Paddington to Heathrow.
Hmm I take it you read the daily fail. Actually the additional cost for tfl rail to Heathrow is due to Heathrow charging for use of their tunnels and privately owned infrastructure. But feel free to spout nonsense about overpaid drivers (y)