I did this 3 hr bicycle tour the first day I landed in London, and what a blast!!! The perspective you get from being on a bicycle vs walking or being on a bus is unparalleled. My instructor, Birgit, was immensely knowledgeable about London's history and also up to date on current culture! She was so much fun, and her professionalism on the road was great. I felt so safe as part of her group and wish this tour didn't have to end. I HIGHLY recommend this tour, especially earlier on in your trip to get your bearings of the city. Birgit was the best tour guide I could've asked for.