Named car parks or post codes for m'home parking

Hope I'm in the right place to post this.

We often read stories/articles regarding visiting areas/locations of interest to us but with no specific information regarding parking.  Does anyone know of a thread here or elsewhere where we could ask like minded Motorhomers regarding specific places to park a M’home legally/safely e.g named car parks or post codes.  Height barriers being our main concern as we have a van conversion.  OH often looks at car park entrances on Google earth only to find  on further research that M’homes are not allowed to use them. Requests for info from councils rarely get a positive result & sometimes no answer at all.  We don’t mind paying to park. Any Info appreciated.