No they won't. I've come back late at night more than once, and while the office may have been still been open, but there was nobody at the desk.
The first time I asked to buy on the train, with the discount, which was refused - so I had to pay the full price, with the surcharge.
The second time, I bought a full price ticket from the machine and asked onboard to have the ticket cancelled and a new one issued. Obviously (I knew it was silly to ask) they refused that too and said you could only get a discount from the staffed desk. She didn't care on the train whether there was someone there or not.
I'd recommend that you buy your ticket in advance for HEX (getting an anytime return if you can so you don't need to worry when you get back to the airport in a rush to make the last train). That, or use Heathrow Connect and save a packet for the sake of around 15-30 minutes, depending on the time of the next service).
Sorry to bring this up again, but I'd thought I'd give you a bit of a view from the other side as an ex HEx employee.
Firstly, it is clearly stated in the Conditions Of Carriage that discounted tickets must be purchased before boarding the train, so the lady was well within her right to refuse. However, most used to allow this once or twice (obviously depending on the attitude of the customer). Sadly, times changed and the company did not wish us to use initiative... :roll:
With regards to not being able to pick up tickets at Heathrow for any NR destination; There used to be a machine at the Bus Station in Heathrow Central, however they removed this for some reason.
The machines HEx have ARE capable of issuing tickets to all over the country, but don't have the software to do so. They have their ticketing system on it (HEx, HEc + LU/Thames Valley Destination Tickets), and the ones at T5 have the additional ability to do Underground tickets and some destinations in the South East England area. However, if you want to use your Railcard or a season ticket, forget about it! There are no prices entered in the system for the discounts...
What's the reason for all this? ATOC. Quite simply, ATOC do NOT allow HEx to use their ticketing systems unless they pay a substantial amount of £££. It just wouldn't be worth it. HEx have tried negotiating with FGW & SWT to get some destinations added, so they "help each other out", but again it all comes down to £££.
BAA/HEx/FGW/NR/ATOC don't have a good relationship with each other, and this is unlikely to change any time soon. Even with CrossRail round the corner, I very much doubt this will change unless TfL are willing to cough up the £££...
