Watch Mumford & Sons: Live at BBC Radio 1's Big Weekend 2016 (1970) : Full Movie Online Free BBC Radio 1's Big Weekend comes from the historic and picturesque setting of Powderham Castle in Kenton, near Exeter. Headliners Mumford & Sons take to the main stage in front of 50,000 fans and bring to a close the first day of Radio 1's flagship event and one of Europe's biggest free festivals.