Can I use cash on the bus?

No. London buses are completely cashless. You must use a contactless card, mobile pay, or a pre-loaded Oyster card.

Is the Tube 24 hours?

Only certain lines run 24 hours on Friday and Saturday nights (Night Tube). Otherwise, the system closes around midnight and reopens around 05:00.

Do I need to print my tickets?

If you are just using the Tube or buses, no. If you are taking a National Rail train to a destination outside London, you can use digital tickets on your phone.

How to navigate London's public transport system

Use a contactless bank card or mobile payment (Apple/Google Pay) for every journey to ensure you automatically pay the lowest daily fare. Avoid buying paper tickets or a physical Oyster card, as these are more expensive and inefficient for modern travelers.

Use Contactless or Mobile Pay. Do not buy an Oyster card. Simply tap your contactless credit/debit card or your smartphone/smartwatch on the yellow card readers at the start and end of every journey. Ensure you use the exact same device or card for every tap throughout the day.
Download Citymapper. Skip Google Maps. Download the Citymapper app. It provides real-time updates on tube delays, bus arrival times, and specific exit guidance (e.g., 'get in the front carriage to be closest to the exit').
Understand the 'Tap In, Tap Out' rule. You must tap your card/device on the yellow reader when entering AND exiting a tube station. For buses, you only tap in once when boarding. If you forget to tap out on the tube, you will be charged the maximum daily fare.
Avoid peak travel times. Avoid traveling between 07:30–09:30 and 17:00–19:00 on weekdays. Fares are significantly higher, and the carriages will be dangerously crowded.

Can I use cash on the bus?: No. London buses are completely cashless. You must use a contactless card, mobile pay, or a pre-loaded Oyster card.
Is the Tube 24 hours?: Only certain lines run 24 hours on Friday and Saturday nights (Night Tube). Otherwise, the system closes around midnight and reopens around 05:00.
Do I need to print my tickets?: If you are just using the Tube or buses, no. If you are taking a National Rail train to a destination outside London, you can use digital tickets on your phone.