Simply press the red button on your remote control at any time. Sometimes you will be prompted to press the red button by an announcement in a programme or a red button logo appearing in the top right-hand corner of your TV screen.
The Red Button is available with any digital service, though the type and number of features vary according to whether you have digital terrestrial, satellite, cable or broadband.
Most of the interactive features currently available are provided by the BBC, Sky and the cable companies. A few other broadcasters, including ITV, offer a limited range.
The red button graphic can be removed from your screen by one simple action, dependent on the platform you are watching on: