I posted this near the end of the old thread, but no one answered, so as unfairness in PP has been brought up again I will repost here.
WRT travellers PP applications failing more often that non-travellers - has anyone got a link to detailed stats?
My suspiscions would be lies damn lies and statistics that you need to look a little deeper than the top line
I would anticipate that the vast majority of PP apps by travellers are retrospective - ie "this is what we've built, take it or leave it".
Whereas the vast majority or PP apps will be in advance of any building work & will have been drawn up bearing in mind local plans, guidelines, and in consultation with the planning department about what is and isn't likely to get passed - typically with compromises made along the way by the applicants, (and the ones that most probably would fail anyway not submitted at all)
So if you are comparing outcomes for a group of mostly retrospective planning apps with a group of mostly prospective plannings apps then it's apples & pears I'm afraid.