London is a huge city which is spread over a wide area. The London Underground (locally called the Tube) is a great way to get around, or use the local buses.
Buy a One-Day Off-Peak Travelcard and you can use all the trains and buses you like after 9.30am.
Tickets can be bought in advance from local newsagents and convenience stores, or from railway and underground stations and they cost little more than a single regular priced trip.
