I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission requirements unknown.
Elsham Hall is a 17th-century English country house situated in its own parkland in Elsham, North Lincolnshire. The park and gardens are open to the public
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 14/04/2021. It remains the responsibility of any pilot to check for any changes before flying at the same location.