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In Northern Ireland, statutory guidance on seclusion is being developed, while in Wales schools are asked to obtain parental consent.

"We've done parental sessions in school," he says, "and we're emphasising to parents that they really have to get control of what their child is seeing and doing at home."

The system involves putting younger teens on the platforms into more restricted settings by default, with parental permission required in order to live stream or turn off image protections for messages.

On Tuesday, Johnson attempted to block a bipartisan bill to permit House members to vote by proxy, aided by technology, when on parental leave.

She added that the move came after realising children could still access harmful content on the internet despite parental control, which should stop such content being seen by children.