British public transport is expensive. It is also full of discounts that the system does not put on posters, because the system's job is to run trains, not to minimise your spending.

In London: contactless wins, almost always

For daily commuting, contactless debit or credit card (or phone) on the Tube, buses, DLR, and most National Rail within the zones is the right default. It gives you:

  • Daily capping — you pay no more than the equivalent day travelcard.
  • Weekly capping (Mon–Sun) — you pay no more than a 7-day travelcard.

Oyster used to be cheaper. It is no longer. Keep an Oyster only if you're a visitor without a UK card or if you use child/student concessions.

One trap: foreign cards work, but the exchange rate applied by your bank is rarely in your favour. If you're here for more than a week, get a UK Monzo/Starling/Chase card — it will save you more on fares than on currency.

Outside London: Railcards, always

A Railcard knocks 1/3 off most off-peak rail fares nationwide, for £30/year. Three you should know:

  • 16–25 Railcard — obvious; you qualify up to age 26.
  • 26–30 Railcard — same discount, quietly extended the age.
  • Two Together Railcard — two adults, 1/3 off when travelling together. Pays for itself in one return from London to Manchester.

Add your Railcard to your contactless and your Trainline account. The discount applies in both systems but only if it knows.

Advance tickets: earlier is cheaper, until it isn't

National Rail advance tickets open roughly 12 weeks before travel. The cheapest seats go first. A £90 peak ticket at the station is the same train as a £25 advance seat booked eight weeks out.

Caveats:

  • Advance tickets are single journeys, specific trains. Miss it and you buy a new one.
  • SplitMyFare (or Trainline's "SplitSave") regularly finds cheaper journeys by splitting a single trip into two tickets on the same train. Legal, fine, mildly absurd.

Buses outside London

A single bus journey is capped at £3 across England until the scheme is renewed or ended. If you're doing any inter-town travel, check the bus first. Megabus and National Express cover long distances for sometimes under £5 — slower than rail but genuinely cheap.

The card nobody mentions: 16–25 after 26

If you're a mature student, an Apprentice, or in full-time education and older than 25, you can often still get the 16–25 Railcard with a letter from your institution. Worth an email to confirm before you pay for the 26–30 version.