Liz Kendall also wants Ofcom to report to parliament every year on how effectively social media firms are keeping under-16s off their platforms

Starmer acknowledges some teenagers will get round these restrictons. But that does not make the rules pointless, he says.

Will it mean that no child ever looks at social media again? No.

But look, this might shock you, but it doesn’t shock parents of teenagers; they get around other laws too.

Some technology companies want us to think that social media is unchangeable, part of an almost natural order.

But we have to resist that kind of learned helplessness. We have agency, we can change it, and we will.

Meta, YouTube and Snapchat say ban, which would stop children using their platforms, will drive them to ‘less safe services’

• How will the ban work?

• UK parents: how do you feel about the ban?

Britain’s plans to ban social media for under-16s will push teenagers towards more harmful platforms, the world’s biggest technology companies have said as ministers push to enact the new restrictions by next spring.

Meta, YouTube and Snapchat have all criticised the ban, which was announced by Keir Starmer on Monday and would stop younger teenagers from using their services.