The UK prime minister has restarted debate about Brexit, aiming to strengthen ties with the EU and hinting at a future referendum, while critics argue the issue was already settled.

Prime Minister Andy Burnham has reopened the Brexit debate, arguing at the Labour Party Conference and in the House of Commons that 'Brexit has done more harm than good', while planning to deepen UK-EU ties at a Brussels summit on Friday 20 November and floating a possible in-out referendum in Labour's next manifesto, amid accusations from Nigel Farage and Boris Johnson over his claim of Russian interference in the 2016 referendum.