I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission requirements unknown.
Lots of places to TOAL around the site. It's not a large place but the castle ruins, and the church are fabulous places to visit. It's managed by Heritage Lincolnshire, and the only sign about photography was no commercial.
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 19/08/2024. It remains the responsibility of any pilot to check for any changes before flying at the same location.