I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission requirements unknown.
Superb urban bando location with some frankly impressive art works - hence the chosen name (I've no idea what this place originally was.)
There is a canal towpath that runs alongside the northern edge of the buildings. There is an (uh-hm) entrance about 50yrds down the path. It's obviously not an official entrance for sure so, enter at your own risk. I was there on a Saturday AM, didn't see a soul but it's clear it's used regularly by local artists / teenagers alike!
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 20/08/2022. It remains the responsibility of any pilot to check for any changes before flying at the same location.