I’m contemplating an all countries pass for Interail. I’m a UK resident. The conditions state that the pass is valid for one outward and one inward journey within your own country. I’ve also read somewhere that this can be to an airport - I intend flying to and from Switzerland. I also intend purchasing the first class version of the ticket. So within the UK can I double check that I can travel to/from home to Heathrow? Also, can I treat the Interrail ticket as an Anytime, ie hop on whatever train takes my fancy (within the bounds of a sensible route to the airport)? Finally, is it valid on the Heathrow Express (in May 2019 if that is important).
Thanks
Thanks