Angela Rayner has told Sir Keir Starmer to push ahead with plans to impose internet restrictions on millions of Britons. The Prime Minister has been urged to "just make a decision" on enforcing an Australia-style social media ban by his former deputy, who insisted it is "so clear that that’s what you need to do”.The move would block Britain's roughly 13 million under-16s from accessing social media platforms such as Instagram, Snapchat, TikTok a…