I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission requirements unknown.
Free parking just past the Ferrycroft Visitor centre and a pleasant walk thrugh Ferry Wood - lovely few chainsaw animals to capture too - then the remains of a Borch and the dam itself.
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 28/04/2023. It remains the responsibility of any pilot to check for any changes before flying at the same location.