I haven't had a chance to write a trip report yet, but as I know folks will be off vacationing soon, I wanted to get a couple of things on the board.
Restaurants: In London we enjoyed La Poule au Pot French bistro in Belgravia, IMLI for Indian tapas, Bibendum (after theater light supper). A real treasure was found on the road to Marazion: Jack in the Green in Rockbeare about 5 miles our B&B in Fenny Bridges. Fabulous meal, beautifully served.
If you need SIM cards and will be in the UK for awhile, we found the best deal at Phones4U. It is their own branded Libera card (by Vodaphone) with 15p/min in the UK and 4p/min to US.
We were there for 2 1/2 days and used a 3 day tube pass which worked very well.
Stayed at B&B Belgravia which we liked.
Rented two different houses in Cornwall (there were 7 of us at that point): In Plain-au-Gwarry , just outside of Marazion, Cherry Tree Lodge. It lacked some in enough towels, dishes, etc., but fit our group well, has a lovely yard, and is walking distance to Marazion. Out in the country a short drive from Fowey we stayed at Penquite Farm near the hamlet of Golant.
I'll try to get a more thorough trip report up, including the many gorgeous gardens and the Eden Project. In the meantime, if you want more specifics feel free to contact me.

Thanks! Can't wait to read the trip report.

I hope you will post your pictures... a picture is worth 1,000 words!
I am glad to hear that you had a good trip- you planned well.
Some quick reviews of restaurants and that B&B would be helpful to other slow travelers. I should talk... I need to do reviews as well.

Bugalu: Nice pics! We're off to London at the end of October. Our niece is spending her semester in London & we'll be visiting with her for a week. Looks like a lot of walking is in store. Thanks again!