Web searches pulled, that pic, and multiple versions that are grainier for no obvious reason. It's never seen cropped differently.
If a genuine photograph - there seems no evidence otherwise at present - might we indeed have a drone.
Firstly, the scale our photograph implies a fairly large object. However, the image has surely been 'blown up', so how do we know the object's actual size wasn't much smaller, perhaps only 30-35 feet in diameter?
For example, in relation there's a significant difference between these photographs:
Our photograph appears to depict a round, central structure, from which the lights extend:
Possibly something like this?
It's part of LIDAR radar mapping drone used by the forestry commission in Scotland and is permitted to fly at night - seemingly not requiring daylight conditions:
As for Macdonald's remark that the object sounded like, 'a thousand hoovers', I think we can take that as an exaggeration and meaning it was extremely noisy and sounded like a hoover.
Drones by their nature are loud and especially large, commercial models.
As one woman put it when complaing about same:
"It sounds like a very loud vacuum cleaner. It gets louder the closer it gets".
https://www.wwaytv3.com/2019/10/31/...rones-flying-near-their-houses-late-at-night/