Blake Harrison (The Inbetweeners, Dad's Army) Holli Dempsey (Derek, Doctor Who, Dad's Army) Matthew Lewis (Harry Potter) Jessie Cave (Harry Potter) Sarah Bolger (The Tudors, Once Upon A Time) Ian Lavender (Dad's Army) Bonnie Wright (Harry Potter) Grant Gustin (The Flash) Bradley James (BBC's Merlin) Melissa Benoist (Supergirl, Glee) Keith Coogan (Adventures in Babysitting) Will Wheeton (Stand by Me, Star Trek) Matt Smith (Doctor Who) Karen Gillian (Doctor Who) Colin Morgan (BBC's Merlin) Emily Atack (The Inbetweeners) Hannah Murray (Skins, Games of Thrones) Ben Hardy (EastEnders, XMen) Sophie Turner (XMen, Games of Thrones)