Great tour - ask for Nadja
The tour office is fairly convenient to get to, and well run. Nadja was great! She has lived in London for the past four years, and clearly knows her way around. My wife had an issue with her back tire after getting started, and in an instant she hopped on her bike and swapped it out for a new bike in minutes. Nadja is knowledgeable on history, sites, and also very attentive to the crowd and making sure they are safe and not forgotten. Very personable, I highly recommend touring with her!