HollywoodChicago:
We reported a week ago that “The Dark Knight Rises” may transform the West London mansion Osterley Park into the film’s Wayne Maynor. While this hasn’t yet been officially confirmed by Warner Bros., we now have enough information to unofficially confirm this rumor.
It looks grand but not as grand as the old Wayne Maynor. I guess it is awesome on the inside and they will probably on film in certain rooms only.
Well, it turns out they're only going to use the inside of this mansion and they'll use the outside of a grander mansion that isn't very suitable on the inside but looks more like the old Wayne Maynor on the outside.