Hopefully this is pretty simple. I'm looking for a nice, VERY BRITISH spot for lunch which isn't going to be a 2-hr affair. An old spot serving traditional British cuisine would be perfect, BUT Rules or Wintons are too involved..menus too big. Going to the theatre this same night and having pre-theatre dinner, so lunch can't be so huge or so long, but needs to be at a nice spot. Something in Mayfair would be nice. Thanks, Chowhounders.