Railcard
What it really means
A discount card that gives you about one third off most train fares. There are several types, such as the 16–25 Railcard for young people and students. It usually pays for itself after a few trips.
Context, tips & common mistakes
The discount only exists while you can show a valid railcard: travelling on a discounted ticket with an expired railcard, or one left at home, is treated as travelling without a valid ticket and can mean a penalty fare, so keep the digital version in the Railcard app where it cannot be forgotten. Two small-print points catch students. Most railcards, including the 16–25, apply a minimum fare on weekday morning peak journeys for part of the year, so a short commuter hop may get no discount at all. And full-time students over 25 can still get the 16–25 Railcard, but need their eligibility confirmed as part of the application, so allow time rather than applying the night before a trip. The card usually pays for itself in two or three longer journeys, and in London you can link certain railcards to an Oyster card at a station to get a third off off-peak pay-as-you-go fares too.