At a macro scale.
There are 268,000 long term empty homes.
https://www.actiononemptyhomes.org/facts-and-figures
Shelter say we need to build 3,100,000 new homes.
https://england.shelter.org.uk/support_us/campaigns/a_vision_for_social_housing
The UK’s population in 1997 was 58m, now its 67m. Housing supply has been woefully inadequate.
Something’s got to give, now.
[I have no knowledge of Goring Gap btw].
A big part of the problem is the density of population in the south east. If businesses and industry looked north at all that cheap land/space it would surely creat affluence and appeal?
The only reason most of us can afford to live here is because we've been here all our lives and/or before it all got silly price wise.
FWLIW, I like to see a gap between towns/villages, but whats proposed there seems like paradise compared to the shit being built in Shoreham, god knows what all these new people witl do for school/Dr's work etc. and presumably they will be teleported as they won't be driving anywhere in a hurry.