London Mayor Sir Sadiq Khan will throw his weight behind a social media ban for under 16s as it is 'the only way to stem the harms we know are happening right now'

Khan is set to call for a ban on social media for under-16s during a speech on Tuesday

London Mayor Sir Sadiq Khan will throw his weight behind a social media ban for under 16s as it is 'the only way to stem the harms we know are happening right now'