I remember seeing this thread before and thought I might add a couple of destinations myself (although just the one for now).
It's "Wallis International", approximately 5 miles east of Peterborough and on the edge of the town of Whittlesey. It's not on the half mil but does appear in the AFE guide.
RWY06/24 with 850m of decent grass, although I'd say only about 650m of that is usable on approach to RWY06 due to the tall trees and obstacles on final approach which you need to stay clear of.
The white building just to the right of the final approach track is a pub, literally 3 minutes walk from the farm house. The first 150m or so of the runway is not visible here as it's tucked behind the trees.
Parking space is very tight, you pretty much have to stick it in the farmer's back garden!
Well worth a visit, strictly PPR especially with the lack of space.