I had the best time with this tour. I did all four walks and, as soon as I finished them, did them all over again! They are very accurate, entertaining, informative and fun. I also did the Trastevere walk by Frommer’s, not even close, avoid this one unless you have plenty of time and patience to figure out directions.
I did the fist walking tour which starts at Embankment Tube Station near Trafalgar Square on the Thames and goes around the Strand and up through Covent Garden and I found it fascinating. Tons of little things I would never had noticed along with lots of history and hidden alleys to duck into and such. A lovely hour and half stoll. I walk fast so it could take you a little longer. And bring your camera to take pictures. Lots to see and well worth your time.