Am planning trip for late Aug will have 10 days, will be flying from US to London, then taking train to Darby haven't made air res (very soon). Want to either plan own walks (very fit 55 year old) or work with group. Do you have any recommendations? We hoped to avoid car rental due to cost and also driving on other side of roads. We do have relatives we will visit but will be getting our own accommodation.
Also we are museum art and history people but do want to emphasize physical activity. Thank you for your ideas.