LONDON, Nov 26: The Sundance festival will be heading back to London in April, 2014 as the popular independent film and music event ventures outside Utah to its only European venue for a third consecutive year, organizers said on Monday. The London branch of the festival held annually in Park City, Utah, under the aegis of actor and director Robert Redford’s Sundance Institute will run from April 25-27 at The O2, a 20,000-seat venue east of the city center. (agencies)