Theresa May to call on Britons to unite as she triggers article 50

PM signs letter that will be hand-delivered to European council president at the same time as she addresses House of CommonsTheresa May will call on the British people to unite as she triggers article 50, beginning a two-year process that will see the UK leave the European Union and sever a political relationship that has lasted 44 years. A letter signed by the prime minister will be hand-delivered to the president of the European council at about 12.30pm – as she rises in Westminster to d