I will be visiting London for seven days in April. I would like to take a day trip out of London at least one of those days. I have researched a few of the tours and thought this one sounded interesting. It was being offered by Evans & Evan, among others, for $100 per person. Has anyone done this tour? Would it be possible to do it cheaper on my own? I am not usually a fan of organized tours as I feel that they are too rushed.