The Prime Minister Sir Keir Starmer has vowed to take “decisive” action to tackle the impact of social media on UK children, as the government’s consultation on the matter draws to a close.

Sir Keir told families and campaigners who insist their children died as a result of social media use that “it is important that we act and will act”.

Speaking ahead of a meeting with them on Tuesday, the Prime Minister had said he was clear action must be a “game-changer” amid calls to ban social media for under-16s.