I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission requirements unknown.
The old military observation tower @ Roydon Common, Kings Lynn, Norfolk.
Parking in car park off of Lynn Road, Roydon.
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 28/02/2024. It remains the responsibility of any pilot to check for any changes before flying at the same location.