Using your smartphone in London may incur data charges, so check your data allowance with your phone provider. You can cut costs by downloading apps on wifi before you travel and by using London's many wifi hotspots when you're out and about.
Alternatively, download these free London maps and guides in advance.
1. Visit London app – official city guide and offline maps

The official London city app helps you make the most of your time in the capital. Features include offline maps, hand-picked lists of the best things to see and do, hidden gems and area guides, great deals and offers, and directions to help you navigate the city.
2. TfL Oyster app and TfL Go

Download the TfL Oyster and contactless app on your smartphone to top up your pay-as-you-go credit, buy travelcards and check your balance. Plan ahead and get around London with the TfL Go app, which helps you find the best routes to reach your destination.
3. AccessAble app

Travel around the city with confidence or plan a trip to a new London area using the AccessAble app. Ensure that your specific needs are met by using detailed guides for accessible attractions, venues and areas around the capital.
4. Citymapper London app

The Citymapper app simplifies public transport in London by providing live, up-to-the-minute information and multiple route options. Features include disruption notifications, offline maps, transport ticket prices, taxi fares and even calorie burn counts!
5. Santander Cycles app

Explore London with Santander Cycles' free app that shows you bike availability and routes to the nearest docking station. With this app, you can receive a bike release code to your phone and hire a cycle without using the docking station terminal.
6. London Architecture Guide app

Learn more about the capital's amazing buildings with the London Architecture Guide app. Use the interactive map to discover more than 1,100 of the city's fascinating structures, from iconic landmarks to hidden gems in London.
7. Uber Boat by Thames Clippers app

You can buy tickets wherever you are for the Uber Boat by Thames Clippers using the Uber app or Thames Clippers Tickets app, meaning no queuing or printing before you travel. Activate your ticket as you board and show it to the crew. You can also check live departure times.
8. Raise Tower Bridge app

Download this free Tower Bridge augmented reality app and take your smartphone up to the walkways during your visit to see the bridge being raised in a 360-degree panoramic video.