Wow - this was great! Well organised, great people, fantastic setting. My five year old managed to do the Junior course with help and encouragement. This is not for the faint hearted but he loved it! I loved it too! Went at half term and it was virtually fully booked so book ahead. Paying for parking was initially a downside until we realised all the other stuff you can do in the park - play trail (absolutely great walk with kids climbing/investigative constructions every 100 yds or so), cycling, cafe (with reasonable food), segway trial etc. The woodlands are open to dogs too.