Had a 3 hour guided cycling tour around London earlier this week using a firm called Tally Ho. Great bikes (Pashley, a UK factory) great guide and a really good way to sight see in London so if any of you fancy anything similar I strongly recommend them.
I enjoy cycling and think it would be a great way to see the sights of London. And Pashley do make some very interesting bikes. I will bear it in mind if I ever go south of Kendal.
It really was good. I am quite a keen cyclist but this is really very gentle stuff, a few hundred yards then stop to see something. No hills to speak of either. The bikes were great too, very low spec but they seemed entirely appropriate to the tour.