Go watch the Superman making-of featurette. Henry Cavill, the actor playing Superman, is English. I know you know this, but still, it's wonderfully unnerving to hear him talk. He went to a boarding school in Buckinghamshire. He did prep. Superman was nurtured not on an alien planet, but in the Home Counties.
Concluding the Nolan Batman trilogy, The Dark Knight Rises does not have the element of surprise inherent in Batman Begins and had to follow the near-perfect The Dark Knight. To its credit, it almost succeeds blending state-of-the-art direction techniques with astounding action and poignant moments of character.