Right. Well. We’re on vacation. Yesterday was a long day of dedicated tourism, capped off with an enthusiastic consumption of ale and wine. All in all, much fun. It started with our setting out all fresh and peppy for the Tower of London. We had vouchers that needed to be exchanged for the Tube passes (magnetic strips, not Oystercards), and we could do that at nearby Paddington Station. No problem, except that the desk that did that was permanently closed, and we’d have to go to Piccadilly station to do it, with the permission of the Tube dude at the…