Old Hanson quarry on the edge of London. Perfect for practise flying. Even fenced off to keep the dog walkers at a safe distance!
There’s two sides - one looks like a field, the other is the gravel pit. Fly in the GP.
Strictly speaking land owner permission is needed but there is no one there. And nobody cares. Its a super safe spot.
Park up in Salcombe Road ( a layby in the woods) and walk down.