I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission requirements unknown.
Small free car park ///poses.fortunate.laces also plenty of unrestricted on street parking.
Small castle, open daily 10am to 4pm if you want to have a wander inside, admissions is free.
Flint Castle in Flint, Flintshire, was the first of a series of castles built during King Edward I’s campaign to conquer Wales. The site was chosen for its strategic position in North East Wales
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 08/04/2023. It remains the responsibility of any pilot to check for any changes before flying at the same location.
