“British Prime Minister Theresa May said Sunday the formal process of removing the United Kingdom from the European Union will be underway by spring. ‘As you know, I’ve been saying that we wouldn’t trigger before the end of this year so that we can get some preparation in place,’ she told the BBC. ‘But yes, I will be saying in my speech today that we will trigger before the end of March next year.'”
Source: U.K. prime minister says formal Brexit process will begin by the end of March