Heathrow Express began accepting Oyster and contactless last month. As with the Gatwick Express, convenience is the word rather than value for money. The fares are the same as walk up singles. If you plan ahead then advance fares can be significantly cheaper. Heathrow Express has always operated on a kids go free basis, so there is no charge to holders of zip 5-10 or zip 11-15 photocards. The problem comes with zip 16+ photocards.
Holders of zip 16+ photocards travel at half the adult rate almost everywhere in Oysterland. For this reason you can’t add a 16-25 railcard discount to a 16+ zip photocard because you are already getting 50% off. Unfortunately Heathrow Express decided to charge adult fares to 16+ zip photocard holders on their services. This means that whilst adults and 18+ students get 1/3rd off off-peak if they have a railcard added to their Oyster, railcard holding zip 16+ photocard holders can’t.
It’s undoubtedly an oversight, and quite understandable, but I hope someone somewhere comes up with a solution. In the meantime it’s getting added to the When not to use Oyster page.
PS. The Epsom story (part 2) is still coming, very soon.