Thanks Hensman,
That is about the direction i'm looking for. Some distance from the inner city, save neighborhood, close to public transport.
Looking for the
Cristal caravaning club i also found another site which lists accommodations based on parameters like bus stations.
London campsites
From your story i get the impression that the campsite has a very narrow entrance hardly leaving room for your DR. Do you think i will get my K75 with EML GT3 through that gate? But there are also caravans on the ground. I presume there must be a second entrance.