Go contactless or order an Oyster
London isn’t the cheapest of cities, so it’s a good idea to watch the pennies where you can. You’ll save a small fortune on transport using a contactless card compared to a travelcard. Alternatively, you could preorder an Oyster card from the Transport for London website. It’s the cheapest way to pay for single journeys, as long as you remember to tap in and out on the yellow readers by the gates. (Forget and you’ll be charged the maximum fee.) Visitor Oyster cards are available from £15.