Career: Smith's first professional roles came in the plays Fresh Kills, opposite Christian Slater, and On the Shore of the Wide World. He appeared with Slater again in Swimming with Sharks, and also featured in The History Boys. He was part of the Olivier Award-nominated cast of That Face. His TV roles include The Ruby in the Smoke, The Shadow in the North and Secret Diary of a Call Girl, all alongside ex-Doctor Who assistant Billie Piper. He also starred in political drama Party Animals, and made his debut as the 11th Doctor Who in 2010. He was the youngest actor to play the part, but will bow out at Christmas, when he'll be replaced by Peter Capaldi. Other projects include Christopher and His Kind, Bert and Dickie, Womb, and the forthcoming How to Catch a Monster. He will return to the West End stage in 2014 to play the lead in a musical version of American Psycho.

Career: Gillan's early TV career included guest appearances in Rebus, Harley Street and Coming Up. She played various characters in The Kevin Bishop Show. She made a guest appearance on Doctor Who in 2008 and two year's later, the show would prove to be a launchpad for her career when she was cast as the Eleventh Doctor's (Matt Smith) first companion, Amy Pond. She made appearances in the show as Amy until 2013. She has also starred in the TV movie We'll Take Manhattan and the film Guardians of the Galaxy (2014). In 2014, she also starred in short-lived American sitcom Selfie. In 2011, she made her stage debut in Inadmissible Evidence at the Donmar Warehouse.

Career: Kingston's professional career began in repertory theatres across the UK. She then spent time with the Royal Shakespeare Company before making the first of several brief appearances in The Bill. Roles in The Cook, the Thief, His Wife and Her Lover (1989), Crocodile Shoes, The Knock, and Carrington (1995) followed. The lead role in TV's Moll Flanders finally made her a star in 1996. Soon afterwards, she moved to the US to join the cast of medical drama ER and quickly became a household name. She remained with the show for seven seasons, departing in 2004. Other high-profile projects have included Croupier (1998), Essex Boys (2000) and Warrior Queen (2003). She's also appeared in Doctor Who, FlashForward, Lost in Austen, Law & Order: Special Victims Unit, Hope Springs, Marchlands and Private Practice. She returned to ER, making two brief appearances in its final series in 2009. More recently, she has starred in Arrow, and Chasing Shadows.