Hope anons won’t mind my parallel digging but we all have our interests.
I noticed in anon’s posted pic that recognizable constellations were still capable of overcoming the London city lights so that even their full constellations were visible even near the horizon where the halo of the atmosphere and city lights is brightest and most difficult to observe celestial objects.
Why do I being this up? Well, in LONDON 2847 we have some feint lights which could be stars but which some thought might be just planes in the direction of Heathrow. (Would be quite a dogfight over Hearhrow though, in my humble opinion, if they are just plane lights.) Nevertheless, this pic provided by anon gives this anon an excellent idea of just how big the constellation of Orion appears and how high on the horizon. A great resource pic of stars seen even with feint clouds visible.
The direction is generally South but I can’t get an exact direction to give a time for the open source pic. But the scalar reference is excellent to visualize the size of constellations in the London sky.