Empire Online: Steven Spielberg has rounded up a clutch of quality British acting talent to head up the cast of War Horse, his first film to reach the screens since 2008’s Indiana Jones And The Kingdom Of The Crystal Skull. Emily Watson, Peter Mullan, David Thewlis and Benedict Cumberbatch have all signed on the dotted line, but taking the lead (or the reins) is young actor Jeremy Irvine, who has earned his stripes with both the National Youth Theatre and the RSC.