Follow RT for news on the UK and its politicians, including Theresa May. She officially became UK prime minister on July 13, 2016. On May 24, 2019, she announced her resignation. Theresa May has also been the leader of the Conservative Party from 2016till mid-2019. Theresa May served as the UK Home Secretary from 2010 to 2016. Check out the news and details on Theresa May’s background and early career. Theresa May was Britain's second female Prime Minister after Margaret Thatcher. She is a Brexit advocate, considering it in the UK’s interest. Get the news and updates on Theresa May’s current career, activities, and policy.