I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission requirements unknown.
There is free parking to the south end of ditching common. Suggest moving to the north end of the common and checking the East Sussex County Council website for the cattle movements around the common. Would make sense to avoid them during the lambing season.
There is plenty of open space to be 50m+ away from people. Be aware of the road and railway on the east and south sides of the common.
There is currently no bylaw on the East Sussex County Council website restricting flight.
Note this is currently within Class D airspace.
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 11/07/2020. It remains the responsibility of any pilot to check for any changes before flying at the same location.