I am happily going to visit the UK for the first time for a bit at the beginning of Feb. I am hoping that I can fly in to Heathrow and then take the underground to King's Cross and then on to Peterborough where my parents live.
So I have found a train on the National Rail Enquiries website, Heathrow Undergrd to Peterborough is £16.50 in advance (good price!!), forty quid on the day (not so good...), but there is no pickup at that station, or it seems at the whole airport (there is no Heathrow option on the drop down list of stations I can pick up from).
So what can I do? Should I maybe take a bus from the airport to a nearby 'main' line station to pick up the tickets, and then return to the airport to continue the journey?

So I have found a train on the National Rail Enquiries website, Heathrow Undergrd to Peterborough is £16.50 in advance (good price!!), forty quid on the day (not so good...), but there is no pickup at that station, or it seems at the whole airport (there is no Heathrow option on the drop down list of stations I can pick up from).
So what can I do? Should I maybe take a bus from the airport to a nearby 'main' line station to pick up the tickets, and then return to the airport to continue the journey?
