Is it a bird, a plane or something else?

Is it a bird, a plane or something else?
Time: 3/01/25 11 am
Location: Corbridge, Northumberland UK

I’ve been interested in the UFO/UAP topic for along time, so I’m always looking up at the sky’s whenever I can.
Seeing as it was a clear sky this morning I was watching a plane fly overhead (which I could make out easily), when I noticed something else moving in the opposite direction, at a similar height.
Unlike the plane, this wasn’t instantly recognizable, made no sound and left no trail.
I paused the recording, as my view was obscured by a tree.
I walked past the tree, following its path, but it had gone.
I would rather post this to be scrutinized, than not at all, as the more videos etc the better!