Originally Posted by
Calchas
Alternatively you could buy a Heathrow to Ashford Intl unrestricted paper ticket which would cover all of the journey. But afaik such tickets cannot be collected at Heathrow.
Shouldn't be any issues with picking up normal UK rail tickets at Heathrow any more, not for about a year or so. IIRC you can only buy HEX / Heathrow Connect like tickets on the spot. However, there are collection only machines. At T5, they're to the left of the main HEX ticket office. At T2/T3, head towards the HEX ticket machines on the -1 level, then turn around when you're there and the normal collection machines are on the wall behind you.