Stayed here with our three boys (7, 5 and 1) and they loved the site.  Lots to see and explore, being built around the ruins of a pre WW2 gunpowder factory - I found the history pamphlet which you could borrow from the site office particularly interesting.  Well stocked information room and very friendly and helpful site staff.  Washrooms immaculate - good powerful hot showers.  Basic site shop with essentials to hand and range of sweet treats for the children.  Lots of easy walks from the site - Sizergh Castle being highly recommended.  Wardens did a great job of keeping the leaves off the roads and were regularly seen with their blowers.  Site is heavily wooded which does restrict sunlight somewhat to some pitches.  However, setting is beautiful and we will definitely be coming back.