About this site

This site focuses on the transmitter network and the engineering aspects behind the digital switchover. The information provided is regularly collated and updated based on input from Arqiva, terrestrial broadcasters, digital multiplex operators, Digital UK and Ofcom.

When is digital switchover (DSO) happening?

The switchover programme covers 68 transmitter group projects across 15 TV regions and will take 5 years to roll out.  Each transmitter group comprises of a “lead” switchover transmitter and its relays.

The transmitter group switchover is planned in a regional order to accommodate network engineering interdependencies and international  negotiations with neighbouring countries. These plans are intended to minimise transitional interference, in line with the Ofcom Code of Practice Policy.

Why will it take so long?

Switchover is the biggest UK broadcasting infrastructure and engineering programme to date and the UK's largest major change management programme. The analogue network was constructed over a 40 year period, and we have to replace it within 12 years (planning, build and roll out) ensuring that it is right for the next 20 years and beyond.

In planning for the construction of the new high powered digital network, contingency has to be built in for bad weather so that switchover dates can be met. In addition, work at many sites depends on agreement with our European neighbours.