Six months after the world's first ever social media ban was launched for under-16s in Australia, reviews of its success are mixed.

The U.K. plans to ban children under 16 from TikTok, Instagram, YouTube and other social platforms, marking one of the world's toughest crackdowns on teen social media use.

Under-16s to be banned from a long list of social media sites, with restrictions on gaming also in the pipeline.

There may even be a online curfew for under-18s too.