Strange lights over the Lake District - what am I looking at here?

Right, so I was up near Windermere last weekend with my mate Dave, taking some landscape photos around dusk. We both saw these odd orange lights moving in formation across the sky - totally silent, which was the weird bit. I managed to get about 40 seconds of video on my mobile before they just... vanished. No fading out, just gone.

I've watched it back maybe twenty times and I genuinely can't work out what it is. Dave reckons Chinese lanterns, but they were moving against the wind and doing some sharp turns that don't seem right for lanterns. Could be drones, I suppose, but they were fast.

Anyway, I've cropped and enhanced the footage as best I can. Would appreciate some proper analysis from the experts here rather than just 'it's swamp gas' type nonsense. Cheers!

Mate, I've analysed hundreds of these videos and I'd need to see the actual footage to say anything definitive, but the formation movement you're describing is classic lantern behaviour if there's any thermals about. The wind on the ground isn't always the same as wind at altitude. That said, if they made no sound at all, that rules out most conventional aircraft. Upload the video and I'll have a proper look.

I've watched it back maybe twenty times and I genuinely can't work out what it is.

This is exactly why dashcam and phone footage has become so unreliable - people watch the same thing repeatedly until they've convinced themselves it's extraordinary. Not saying that's what happened here, but it's worth considering. Temporal compression on video can make things look faster than they actually are.

Please tell me you've checked Flightradar24 for that time and location? I've debunked about 70% of 'UFO' sightings just by cross-referencing with flight paths. Military exercises over the Lakes aren't uncommon either. What date was this?

The fact that they disappeared instantly rather than moving over the horizon is actually quite interesting. That's harder to fake than the lantern crowd want to admit. Not saying aliens, but definitely worth documenting properly. Do you have any still images from the video?