Westminster City Council has joined forces with O2 to bring free Wi-Fi to the busiest parts of London ahead of the 2012 Olympic Games.
Anyone in the area - which includes Leicester Square, Trafalgar Square and the Houses of Parliament - with a smartphone or tablet device will now be able to access Wi-Fi.
Free Wi-Fi will also be available in Oxford Street, Regent Street and Piccadilly Circus
Users should keep an eye out for O2 Wi-Fi on their list of available networks on their devices and follow the steps to register.
Once signed up, no passwords or usernames are necessary.
All the hotspots can be found here.