I'm comparing doing this day trip on our own, vs on an organized tour. Looks like we can take a train from London to Salisbury & back for about £69 pp and then the Stonehenge tour loop for £22 pp.
Pros and Cons of each? Is the train ride a better experience than the 2 hr drive from London on motorcoach? Better to have more time to wander ourselves in Salisbury (and take our time listening to the audio tour) at Stonehenge itself than be on the schedule of a bus? Bus may be a bit cheaper?