Campaigners and MPs have warned the PM is missing a ‘once in a lifetime’ chance to force platforms to introduce lasting change Stay on top of the latest political news with our View from Westminster newsletter Get the latest political headlines with our free email Get the latest political headlines with our free email Email * SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our Privacy notice Sir Keir Starmer ’s social media ban has been criticised