As we were only in London for one day before going on a cruise, this was a terrific little tour. Our guide was prompt, friendly and was able to give us a good brief history of the important landmarks, as well as other interesting information. We were able to get out and take pictures when we wanted. He knew the area well and even got around many traffic jams in order for us to get to Kensington Palace. In addition to the usual landmarks. The company called me the very same day I booked my tour because I wasn't staying at a hotel that was listed on the Viator site and I had wriiten them an email checking on the pick-up location. The man informed me that they will pick up at ANY central London hotel! Great trip! Great service!