Millions of BBC One fans have been urged to check two channels today as the UK prepares to “shutdown”.

TELLY fans are urged to take a quick test or risk suddenly losing BBC One next year.

The BBC is switching all of its satellite channels to HD, meaning the standard quality versions will be shut down.

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For anyone with an old Freesat set-top box, that could mean you won’t be able to access BBC One and the broadcaster’s rest of the channels at all in 2024.

Certain boxes are not equipped to process HD.

The BBC says it has to ditch SD (standard definition) channels to make way for crystal clear HD.

BBC One already started switching this week, going through the different regional and national variations used to get your local news.

The end result will be an end to the dreaded red screen that appears at 6pm on the HD version of BBC One when the local news is on.

And you can finally watch your local news in beautiful HD.

All BBC SD channels via satellite will close in early 2024.

How do I know if my set top box is affected?

The changes affect SD-only satellite boxes.

There’s a clever way to check if you’re not sure.

Freesat owners can go to channel 799 and it will automatically tell you if you are free or if you need to update your box.

Anyone with an old Sky set-top box could also be affected.

The best way on Sky is to go to channel 105.

If channel 5 HD shows up as a channel, your box can handle HD.

But if it only says Channel 5 and doesn’t mention HD, that means you have an old SD-only box and need to upgrade.

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