The trip was great! We had an excellent tour guide (Jess). I learned more on that tour than I did by living in London for 6 months. I brought my 14 year old daughter and she also enjoyed the trip. I loved the trip to Lacock for lunch. We ate at a 600 year old pub (lunch was included, drinks were extra). The pub was located across the street from where a scene in Harry Potter was filmed.
My daughter got a great introduction to England's history and enjoyed the entire day. The stops were nice and timed perfectly. Stonehenge was the shortest as you didn't really need much time to see it. We had enough time in Bath to tour the Roman Baths and do a little bit of shopping. Windsor was also interesting, although we went right before the Royal Wedding, so the staterooms and the chapel were closed. I still enjoyed it!