I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission not required.
You will probably get grief from the security team on site, but they have no idea of the drone rules.
As long as you follow the drone code, you are free to fly from public land just off the site.
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 20/07/2022. It remains the responsibility of any pilot to check for any changes before flying at the same location.