Kent...here's the actual quote:
"Why, Sir, you find no man, at all intellectual, who is willing to leave London. No, Sir, when a man is tired of London, he is tired of life; for there is in London all that life can afford."
— Samuel Johnson, September 20, 1777
(For those of you who haven't heard of Johnson, he was best known for the "Dictionary of the English Language"--the first of its kind. )
Now, back to Steve....I agree that you should look in London Walks since they offer guided walks all over the city and its outskirts each geared towards a different subject or area. What besides Buck House isn't open?
Additionally, within an hour or so train ride you have the university towns of Oxford and Cambridge, you can take a tour up to the Cotswalds, you can take a short cruise or tube ride to the Naval College and Museum at Greenwich, and short train or boat ride to Hampton Palace and its famous maze, there's the Imperial WAr Museum, great theater, and on and on.