Ofcom sets technical standards for the digital terrestrial TV platform (also often known as Freeview ). These standards specify the types of signal which should be used by broadcasters, and require minimum standards of reliability for the transmitters that broadcast digital TV services.
The terrestrial TV platform is continuing to change and evolve: for example, several new services have been launched since the digital TV switchover was completed in 2012. New legislation relating to the resilience of communications networks (including broadcast transmitters), has also been adopted since the broadcast TV technical codes were last revised.
We therefore propose to update and rationalise the TV technical codes to ensure that they are relevant, proportionate, and reflect current technology and broadcast industry practice.
 Freeview signals are also used by other TV providers such as YouView and BT TV to deliver conventional linear TV services to their customers