I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission requirements unknown.
There is a carpark at kendal football club off Castle drive then there is a bit of a walk up to the actual CASTLE
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 18/01/2021. It remains the responsibility of any pilot to check for any changes before flying at the same location.