Yes it was fun. I don't think I could have asked for a better visit to London. The weather was perfect, the concert was marvelous, and the food and beer very good.
It is too bad I could not meet up with anyone else, but I can truly say that I have a new friend in England, rolycat.
And as far as Mike's recommendations for good Indian food, he was spot on. That was some of the best I have eaten in my life.
I dropped by a couple of "electronics" stores and was sorely disappointed. I stopped at a Maplins in Hammersmith. I was not impressed at all. There was some Raspberry Pi stuff, Arduino, some cheap tools and multimeters, and some various parts along with a pile of computer parts and crappy headphones. I was specifically looking for a USB 3.0 hub, but they didn't have any. The prices were the same or more than Chile but at least there was a bit better selection.
For future use by anyone traveling to London. Forget bargains, they don't exist. Get a phone chip from EE or O2. Cheap enough and worked very well. I got an EE card, 1gig data, 200 minutes, and 500 text for 10 pounds. If you are there for more than a few days, get an Onion Oyster card for the tube. It will save on time and money for the long run. One week cost me 38 pounds ( if I remember correctly) for zones 1 and 2, unlimited use for one week. If you return the card at the end you get 5 pounds refund.
Plan on 2 days for tourism just in central London. Fish and chips at St. Christopher's pub near London Bridge station was good but what is it with the mushy peas with special herbs?