Just checked the DJI GEO maps and Greetham Common isn't showing as a no fly zone. It's strange that next to the old control tower take off failed but a mile or so away, whilst still within the old airfield perimeter I could fly .
I had the same problem, private dirt strip near my house was classified as 'restricted zone" , "aircraft will takeoff and hover" on the GO4 app, but wasn't listed as such on they're website, it took a week to 10 days worth of emails, screenshots back and forth but they finally reclassified it.
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