This movie features what might be the funniest wartime sequence I’ve ever encountered—the fish! The story revolves around young "Bill" (Sebastian Rice-Edwards), who along with his mother, "Grace" (Sarah Miles), and older sister, "Susie" (Geraldine Muir), finds himself in London as World War II begins. His father (David Hayman) is quickly deployed to fight, but his mother refuses to separate from her children, so they…