English actress Tamsin Egerton started acting in theater at the tender age of 6. She became active TV and film, however, in 2001. Some of her early credits include roles in Hans Christian Andersen: My Life as a Fairytale, The Mists of Avalon, and Sherlock Holmes and the Case of the Silk Stocking. On the big screen, she appeared in Keeping Mum, Earthquake and the St. Trinian's film franchise where she played Chelsea Parker. At present, she plays Guinevere, the love interest of King Arthur on the Starz cable series Camelot.