Fighting jet lag. We walked through Green Park to Buckingham Palace (the Queen was away for the evening alas) then on to Parliament and Big Ben at sunset. Lovely. Back to the hotel via tube (for practice) then this wonderful dinner at Claridge's.
A little disappointed with the London Pass I bought a ahead of time. It came with a swipe card that doesn't work. Attendent told me that's old tech (they use touch to pay now) and they won't replace it.