What's worth seeing in London if I only have about 24 hours there?
It will be on a Sunday, and I'm already planning to go to church at All Saints Margaret Street. I also kind of want to visit Westminster Abbey, and/or St. Paul's Cathedral. (I realize that on a Sunday both will be more difficult, but that's the one day I have free while I'm over there, so.)
Tell what I'm missing! And preferably not museums or galleries (I get stuck in them!), or anything super far out in the suburbs unless it's really worth my time.