We love the Norfolk coast our favourite campsite this summer has been Deepdale farm at Burnham Deepdale ,only campervans and tents allowed ,great cycling ,walks and Beaches.
Our second favourite uk campsite this year was south winds at polzeath lots of space and the cleanest showers and toilets By far .
Agreed, it's a great place, Diverse county has just about everything you could want, and well suited to us Cali owners, hopefully bump into you at some stage, will have a look at the sites that you mention, thanks for the tips