re: Anyone been to London recently?

Some of these have already been said, but my picks:

Parliament Tour - very cool, if you're into that kind of thing. You'll go on the floor of Commons and Lords if not in session. I stood right at the Dispatch Box.

Westminster Abbey
Cabinet (Churchill) War Rooms

Tower of London, but just go look at the jewels and leave. The rest is pretty meh.

British Museum - Rosetta Stone is here.
V&A Museum

Go to the Churchill Arms in South Ken for a pint, but also eat Thai Food in the restaurant in the back. Walk past the bar and go straight back to a small host stand to get your name on the list.

Shop at Harrod's and Liberty. Harrod's has a food hall which is a good place to visit. Also, shop at Fortnum & Masons, but high tea in the is great.

Eat at (any location) for fantastic Indian/Iranian fusion.

Borough Market is also a fun place to get street food for lunch. There is going to be a Thai Food stand there with a line. They are making tiny coconut pancakes. They are the best £5 you will spend.

Drink as much Extra Cold Guinness as humanly possible, since we can't get it over here.

Day trip to Windsor is easy by train. If you can be there in the evening, you can catch Evensong at St. George's which is pretty special.