I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission requirements unknown.
'Maiden Castle is one of the largest and most complex Iron Age hillforts in Britain. Its vast multiple ramparts enclose an area the size of 50 football pitches, and the site was home to several hundred people in the Iron Age (800 BC–AD 43).' (English Heritage)
There is a car park at the site and an area the size of 50 football pitches to fly from.
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 11/02/2024. It remains the responsibility of any pilot to check for any changes before flying at the same location.