I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission requirements unknown.
There's a free car park opposite the Abbey and several 'pay' car parks in the area as well. There are also a few other local locations worth photographing like Bangor Castle and the Walled Garden.
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 24/07/2022. It remains the responsibility of any pilot to check for any changes before flying at the same location.