Thanks for the clarification.
There are no POI locations, as far as I'm aware, that have height barrier restrictions.
It has been a basic principle since the POI system was implemented that all the places should be accessible by motorhomes and camper vans. There are some places that are restricted by virtue of weight or length constraints but a very small percentage of the whole.
In addition the installation of a height barrier is a clear indication that overnight usage by our type of vehicle is not welcome.