Well I wouldn't know if it's related.
I saw something very similar with a friend of mine. Formation lights in the sky moving at a very slow pace. It was new year's eve at the time, and I inevitably figured either very quiet aircraft to start the apocalypse (as a airfix model maker and full time student mechanic my mate debunked this theory) or possibly embers from the fireworks shot up ahead of us, from cookridge to meanwood; it seemed it was from that direction the lights were coming from. Though there weren't so many, they were as smooth as the lights shown here. Of course lanterns sound an even more plausible idea.
( Christian's Bolt and Ski, Sat 6 Feb 2010, 2:04, Reply)