Blimey, yes! Had this exact thing happen in my old place in Cheltenham. Three nights running the cabinet above the kettle was wide open every morning. Put a little camera on it (nothing fancy, just a cheap Wyze cam I had spare) and sure enough, 3:17am on the dot it swings open. No draught, no loose hinge.
What gets me is the timing. Always around 3am. That's not coincidence. There's a reason that hour keeps cropping up across so many reports on here.
Now I know some folks will bang on about thermal expansion and temperature drops causing doors to pop - and fair enough, that's worth ruling out. But have you noticed any other activity alongside it? That's the key question for me. Isolated incidents are trickier to pin down but when things cluster together it paints a different picture.
I've been reading a bit about infrasound lately too. Apparently certain low frequencies can cause disorientation and strange perceptions. Could explain some cases. But not a camera catching physical movement.
What's the house history like? Any idea what was there before?
Genuinely curious whether anyone else has managed to capture this sort of thing on video - would love to see footage compared side by side. There might be a pattern in how the doors open that tells us something.