So, it was time to figure out what to do, and what wasn't going to get done.
Not done. There's this colossal ferris wheel right outside, but, we didn't go on it this trip.
Done. St. Paul's Cathedral. Excellent. I made the journey 434 steps up to the Golden Gallery; Suzanne made it 282 steps up to the Stone Gallery. Our official estimate had each of us doing about 1000 steps today (the 193 steps at the Covent Garden station came as a surprise).
Had lunch at the aforementioned Covent Gardens; I had a Cornish Pastry, Suzanne had a waffle with chocolate sauce.
Went to the National Gallery, saw some of the highlights, but, again, probably didn't spent nearly the time we should/could have there. Walked from there up to Buckingham Palace, and then took a break.
Went out for dinner at around 8 pm; ended up, again, at an Indian restaurant.