"It was fantastic to be able to have my kids on set. Dash, my eldest son, who’s not quite five, was into knights and his godmother had given him a plastic Marks & Spencer knights’ outfit and [first assistant director] Tommy Gormley said that he could stand to protect me during the scene where Clive [Owen] is talking about the immensity of sitting on the throne. I’m actually looking through an archway at my son standing in his knights’ costume protecting me!"