Multiple sightings - Arch shaped haze moving swiftly in night sky

Multiple sightings - Arch shaped haze moving swiftly in night sky
I'm posting this on a whim, in hope that others may have seen the same.

A few times now over the past 2 weeks I've been seeing 'things' moving at speed in the sky. They are not emitting light, but somehow contrast the night sky enough for me to register their movement. They are fast, and gone in a fleeting moment, but distinguishable from shooting stars, satellites, birds, bats etc. 

They seem to be lower than the planes but it's hard to gauge. They appear to be spherical, and neither darker nor lighter than the sky, but somehow different. I really can't quite describe it.

I've seen another type too, that look how I can only describe as small arch shape, with a misty almost translucent effect to them. They are certainly not eye catching, I see them by chance. Once again, it's the movement that catches my attention. I've been seeing these in high numbers recently. Has anyone else seen similar? 

The reason I disregarded that they could be birds - (owls) or bats, is because we see a these around our area at times, as we are located near a nature reserve. They do not move as fast or as erratically as bats, and the owls (barn owls in these parts) are easily visible on the clear moon lit nights. 

The number of times I'm seeing these 'things' is also way more than any owl/bat sigjtings. Some nights I've witnessed 3-4 in the space of 10 minutes.

My most recent sighting was tonight, so I will record that as my sighting info below.

Time: 2nd January 2026, 19.32pm

Location: Burnham-on-Crouch, Essex, UK