Using UK Public Transport: Trains, Buses and the Tube

英国公共交通指南:火车、公交与伦敦地铁

How UK trains, buses and the London Underground actually work: which ticket type is cheapest and when, railcards, contactless capping and Oyster, reading departure boards, Delay Repay, and the unwritten etiquette.

Written & reviewed by the UK Decoded editorial team Last checked: 24 July 2026 7 min read

Three systems, not one

The first thing to understand is that UK public transport is not a single network. There are three overlapping systems, each with its own tickets and rules. National Rail covers intercity and regional trains run by many different operators (Avanti, LNER, Northern and so on) but sold through one shared ticketing system. Transport for London (TfL) runs London's Underground, Overground, Elizabeth line, DLR, trams and red buses, with its own fare system based on tapping in and out. Finally, local buses outside London are run by private companies such as Stagecoach, First and Arriva, each with their own fares and apps.

A ticket for one system usually does not work on another. A National Rail ticket to London will not cover the Tube unless it says so; a TfL cap will not cover a train to Manchester. Newcomers who grasp this early save themselves a lot of confusion and money.

Train tickets: which type, and when each is cheapest

National Rail fares look chaotic but follow a logic. There are three walk-up fare types. Anytime tickets are the most expensive and valid on any train. Off-Peak and Super Off-Peak tickets are cheaper but banned during busy periods, usually weekday mornings before around 09:30 and sometimes the evening peak on routes into big cities. The exact restrictions vary by route, so always check the ticket details rather than guessing.

The fourth type, the Advance ticket, works differently: it is sold in limited numbers for one specific train, released weeks ahead, and is often dramatically cheaper. A London to Edinburgh Anytime fare can cost well over £150, while an Advance bought three weeks early might be £30 to £50. The trade-off is rigidity: miss your booked train and the ticket is worthless, though if a delay to a connecting train caused it, staff will normally let you travel on the next service.

Rules of thumb: book Advance for long, planned trips; buy Off-Peak returns for flexible day trips; and never buy an Anytime fare without checking whether waiting half an hour for the off-peak boundary would halve the price. For some longer journeys, split ticketing — buying two or more tickets covering sections of the same journey — is legal and can be cheaper, as long as the train calls at the station where the tickets join.

Railcards: the discount most newcomers miss

A railcard costs about £30 a year and cuts roughly a third off most rail fares. The 16–25 Railcard covers most students (and mature full-time students over 25 can usually get one too); there are also 26–30, Two Together, Family & Friends and Senior versions. If you take even three or four longer train trips a year, it pays for itself. Buy online at the official railcard site, load it into the app, and add it to journey searches so the discount is applied when you book. Note the small print: with a 16–25 card, a minimum fare applies to weekday morning peak travel, and you must be able to show the railcard with the ticket or an inspector can treat the ticket as invalid.

London: contactless, Oyster and capping

In London, do not queue to buy paper tickets. Tap a contactless bank card or phone on the yellow reader at the gates, and tap out at the end (on buses and trams you only tap in). TfL charges per journey and applies daily and weekly capping: once your travel in a day or a Monday-to-Sunday week reaches the cap for the zones used, further journeys are free. For most people this makes contactless automatically the cheapest option, with no need to calculate anything.

An Oyster card does the same job with pay-as-you-go credit, and is worth having if your bank card charges foreign transaction fees, or for students: an 18+ Student Oyster photocard gives 30 per cent off travelcards and bus passes. Two warnings: always use the same card or device for tapping in and out, otherwise you will be charged two maximum fares; and buses accept no cash at all — the Hopper fare lets you take unlimited buses within an hour for one bus fare.

Buses outside London

Outside London, buses are the main public transport in most towns, and the etiquette differs: you must signal to the driver by raising your hand as the bus approaches, or it may not stop. Pay the driver by contactless card (say your destination, for example "Single to the station, please") or show a ticket in the operator's app, where day and week tickets are usually cheaper. As of mid-2026, a government-backed cap has kept most single bus fares in England low — check the current scheme on GOV.UK. When you want to get off, press the red bell button once, in good time. And in much of the country people quietly thank the driver as they leave — join in.

Reading departure boards

Station boards list trains by final destination, which may not be your stop, so check the "calling at" list on the board or in an app. "On time" and a platform number mean go; "Delayed" with no estimate means wait near the board; platforms can change at the last minute ("platform alteration"), so listen to announcements. On the Tube, boards show the line's status instead: "Good service" means normal, "Minor delays" means a slightly slower trip, and "Severe delays" or "Part suspended" mean consider another route. Two apps cover almost everything: any National Rail-powered app for trains, and TfL Go or Citymapper for London.

When things go wrong: Delay Repay and penalty fares

Delays are common enough that compensation is systematised. Under Delay Repay, most operators refund 25 per cent of the fare for a 15–29 minute delay, 50 per cent for 30–59 minutes, and 100 per cent for an hour or more, regardless of the cause. Claim on the operator's website within 28 days, keeping your ticket or booking reference. Weekend engineering works are also routine: check before travelling, and expect the dreaded rail replacement bus, which is slower but included in your ticket.

Never board without a valid ticket where machines or apps were available. A penalty fare in England is £100 (halved if paid within 21 days) plus the fare owed, and "I was going to pay later" is not a defence. If the machine is broken and there is no other way to buy, boarding is allowed — but note the machine's fault message or take a photo.

Etiquette in one paragraph

Let passengers off before boarding. Stand on the right on London escalators; walk on the left. Queue at bus stops roughly in arrival order. Keep phone calls short and quiet, use headphones, and avoid hot smelly food. Offer priority seats to anyone elderly, pregnant or disabled. Put your bag on your lap when the carriage fills. None of this is law; all of it is noticed.

Quick FAQ

  • Is the Tube ticket also a train ticket? No — unless a National Rail ticket says it includes Underground travel (some cross-London tickets do), they are separate systems.
  • Return or two singles? Off-peak day returns are often barely more than a single, but on many routes two Advance singles beat any return. Compare both.
  • Do children pay? Under-5s travel free; 5–15s pay child fares; London has Zip photocards giving free or discounted travel for under-18s.
  • What if I tapped in but the gate rejects me on exit? Do not jump the barrier — find a member of staff at the wide gate and explain.

Official sources & further reading

Rules and amounts change — always confirm important details with the official source before acting.