Going to the Olympics will be a huge amount of fun, especially if you know where to eat. Before I left on the trip, I used Facebook and Twitter to ask for restaurant recommendations.
Ottolenghi
My wife's cousin who lives in Switzerland insisted that when we were in London, we had to go to Yotam Ottolenghi's food shops selling ready-made or, as the English call it, "take-away" salads, mains and desserts.
I visited the Belgravia Ottolenghi at 13 Motcomb Street (there are others in Notting Hill, Islington and Kensington and a small sit down restaurant called Nopi near Oxford Circus).
Ottolenghi is a showman who puts his flashiest products in the front window. The tarts, cup cakes, muffins and cookies are drop dead gorgeous.
Just inside the shop, farmers market fresh salads are displayed in large oval bowls on elevated platforms, the better to grab your attention. Almost as an afterthought, the few mains like cold chicken and baked salmon are tucked out of sight in a refrigerated section.