In the UK the big two campsite clubs are the Caravan and Motorhome Club and the Camping and Caravanning Club.
We've been members of both and slightly prefer the former, though there's not much difference between them.
They both have large campsites (some with over 100 pitches) and smaller 5-pitch sites (the types we prefer by far).
Both clubs cost around £50 a year to join.
Only members are supposed to be able to use the sites, though on the smaller 5-pitch sites we've rarely been asked to show our membership cards. However, on the bigger 'club' sites you'll nearly always need to show your card when you book in at reception.
We also tested Britstops for a year. It enabled us to stop overnight in places like pub car parks, museums, farm shops, leisure centres and even vineyards. When you join you get a book with a list of all locations that have registered with the scheme.
There is also a scheme called Pub Stop-overs which is similar to Britstops. And throughout the summer season you'll find a growing list of 'pop-up' campsites appearing. You don't need to be a member of any club to use these. Same goes for privately owned campsites that are not affiliated to either of the 'big two'.
RELATED CONTENT: Read more about our experiences of campsites in the UK