If you use Freeview then you'd be wise to give your TV or set-top box a quick retune. The popular telly service has just unleashed a pretty big update which includes some new channels launching, some services changing position and one platform shutting down. Perhaps the biggest update is the switch on of GREAT! Real which promises to show back-to-back unscripted content.

Programmes coming to GREAT! Real include Heathrow: Britain’s Busiest Airport, Paddington Station 24/7, land Medics and Coast Guard Alaska.

“With an array of gripping observational series focusing on dramatic real-life events and moving human stories, brand-new free channel GREAT! Real gives TV audiences a compelling, behind-the-scenes insight into the lives of real-life heroes,” the firm berhind the channel said.

If that sounds interesting you'll find the service on channel 61 after your retune.

Along with GREAT! Real there's also Shop on TV (channel 89) and That’s TV (channel 92) which are also now live. As we mentioned earlier, this is not just about new things launching with a bunch of popular channels also switching positions.

These include ITV4+1, Together TV+1 and Pop.

FULL LIST BELOW INCLUDING NEW POSITIONS

ITV4+1: WAS Ch 89 - NOW Ch 93

Together TV+1: WAS Ch 92 - NOW Ch 90

Pop: WAS Ch 206 - NOW Ch 205

Pop Max: WAS Ch 208 - NOW Ch 206

Pop Player: WAS Ch 212 - NOW Ch 208

"On 20 March 2024 some broadcasters are making important changes to their channels," said Freeview in a update on its website.

"You will need to retune to update your TV and keep your channels and TV Guide up to date."

  HOW TO RETUNE YOUR FREEVIEW TV

Freeview has issued advice on how to retune devices and here are the steps every user needs to follow.

• Press menu on your box or TV remote control

• Select ‘set-up’, ‘installation’, ‘update’ or a similar option. If you’re asked for a password, the default code is ‘1234’ or ‘0000’.

• Select ‘first-time installation’ (sometimes called ‘factory reset’, ‘full retune’ or ‘default settings’).

•Press ‘OK’ if your equipment asks if it's OK to delete existing channels and then your retune should start automatically. If you’re prompted to, save the channels that are found.