Blatant self-promotion maybe - but it is a free site, not commercial
I'm prompted to start this thread by a couple of comments on the "why choose a motorhome? not a caravan" thread referring to height barriers and other restrictions.
For anyone who doesn't know about the site, it is
Motorhome Friendly and Unfriendly Parking.
One of the features is a downloadable set of sat nav PoIs of places where parking is possible. This has grown in size from 1200 places in March 2007, when I first created the set, to 1488 places as of a couple of weeks ago.
Yes, there are restrictions in many places but it's not all doom and gloom.
Graham