As it happened, we popped out of the Underground directly in front of the theater that's playing We Will Rock You, the Queen musical. We'd talked about seeing a matinee, but they don't have any matinees until Saturday, and we'd really rather be at 1812 Tones then.
Off to the British Museum then, where we saw a great many artifacts and tired ourselves out. Then back to the Underground station, where we discovered that we couldn't get back via the line we'd come in on, because they'd closed the platform to work on it. Quick, Gretchen, the map!
We rerouted with an extra change and got back to London Bridge station, grabbed something to drink, and barely missed the train to Gravesend, so we got back a good bit later than we'd intended. But we eventually did get back, called Lissa, and were rescued from the station.
Everyone's off to bed now, where I should be shortly.