Brit Stops is anyone a member of this?

Pawsome

Hi my motorhome insurers are advertising this in the helps and tips section.  Is anyone a member?  It costs £25 a year to join and says includes free places to stay Quote - "The Brit Stops book is clear and simple to use, and features hundreds of country
pubs, farm shops, vineyards, breweries, craft / antiques centres, etc. all offering an invitation through the Brit Stops scheme to stay overnight in your motorhome or campervan* in a safe environment - free of charge!"

I have checked out the website but it seems you must join before you can see the location of places, so wondering if anyone else has joined and can advise how good it is?
http://www.britstops.com/welcome.html