I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission requirements unknown.
Next door Stanmer Park has parking, a cafe and is a beautiful filming location in itself. Be careful not to stray into the near-by Amex Stadium's no-fly zone, though.
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 27/05/2023. It remains the responsibility of any pilot to check for any changes before flying at the same location.