To take legal action. A teenager has been arrested on suspicion of murdering a 16 year old girl, leonne weeks, who was found yesterday on a pathway in rotherham. And how Donald Trumps latest tweet in praise of his daughter, ivanka, woman in brighton . Woman in brighton. And coming up in the sport on bbc news, another good day for british players at the australian open, with Heather Watson among those to progress to the second round. Good afternoon and welcome to the bbc news at one. The Prime Minister says the uk will leave the european Single Market when it quits the eurpoean union. In her long awaited speech on the impact of britain leaving the eu, theresa may said instead she would seek a bold and ambitious new Free Trade Agreement with europe for a global britain. Mrs may also confirmed that any final deal could be phased in, and that both Houses Of Parliament will get to vote on it. Well be getting political and business reaction, and explaining what it will mean for the uk. But f