Stayed in late August 2019. Site entrance easy to miss, gate in hedge.
I hadn't been able to locate the site on google maps, probably as its down a green lane, which google doesn't recognise, I've since added it to google to help fellow travellers.
Green field site with a lot of space, but people all head to the sunny side of the field. lots of blackberries in the hedgerow whilst we were there. There is access to the Ridgeway path by following the track to the right of the horse field, lovely views and open countryside.
Via the small park opposite Balmers entrance you can get to the pub, an amazing play park or village community shop by going straight on. If you follow the path to the right and head past the school you come into Tring Park, there's a great scenic walk over to Tring (about 20 minutes), there are steep sections and a spiral stepped motorway bridge. Once on the other side there is the Natural History overflow museum, entry is free and our granddaughter loved it.
At Great Missenden 10 miles away is the Roadl Dahl Museum and Story Centre another great day out.
30 minutes away is Warner Brothers Harry Potter tour, this must be pre booked, especially during school holidays.