We had a 3 night stop here. The facilities were spotless, the wardens were very helpful. We took the train into London from Denham Station. £13.50 for a day Rail Ticket which covered all Trains, Tube and bus trips. We approached the site from junction 17 M25. The site directory gives a route to the site up Denham Green Lane. Our satnav took us up Tilehouse Lane. Once you enter Tilehouse lane there is no turning back, the wardens asked me if I still had 2 sides on my caravan. A sign telling you no Access to CC site at this junction would help. Leaving the M25 at junction 16 is straight forward but there are no signs to the site from here. We will use this site again when visiting London.