Sounds like it was a dream trip!
I've seen Buckingham from the OUTSIDE, but not in!
And I heard the boychoir at Christ Church in Oxford, which made me cry as well!
We also went to Whitehall Palace where Bush gave his speech. AND we saw Phantom of the Opera at Her Majesty's Theater. (The hubby refused to go to London unless I could tickets. I don't think he realized I could get them so fast here in the States!! It was a lot of fun. It was my second time to London, so I got to show him around.