We took an International Friends tour from the Cruise Port in Southampton to our Hotel at Heathrow. We stopped at Salisbury Cathedral, Stonehenge, and Windsor Castle. Our guide was very clear on timing and very organized. They actually drop you off exactly at your hotel. We had 53 people on our bus and they did a good job getting everyone where they needed to be. We felt a little rushed at Stonehenge as we only had 90 min there and we spent 60 of those minutes waiting for the shuttles to take us out to and back from the Stones - and since there was no designate time/stop for lunch (the guide was very clear about this) this was one place we could get food and it just felt rushed. Given everyone was just going to hotels (not getting on flights) I felt this tour could be extended to have more time if the places stopped were very busy. Maybe it is because we left at 9am instead of 8am because of the confusion when when our ship arrived. For a big bus tour this was good experience.