Objects moving in my flat—started three weeks ago, getting worse

I'm genuinely uncertain whether to post this here or call a priest or ring my GP, so I'm starting with you lot. This has been happening for about three weeks now and I'm starting to get proper worried.

It started small - I'd come home from work and find things moved. Glass on the kitchen counter that I definitely left on the table. Books rearranged on my shelf. I thought I was just forgetful until the escalation. Now I'm seeing it happen. Objects moving without anything causing it. My kettle was on the counter yesterday morning, and I watched (actually watched, I wasn't imagining it) it slide backward about 30 centimeters.

My flat is in a Victorian building in North London, built around 1890. I've lived here 18 months with no issues. I'm 28, live alone, no pets. No one else has keys. I'm not mad, I'm not under stress (work is fine, relationship is fine), I'm not on any medications that would cause hallucinations.

What the hell is this? Is it actually paranormal or am I missing something obvious?

Before assuming paranormal, have you ruled out the obvious? Subsidence, vibrations from building work nearby, animals in the walls, even your own unconscious movements? I'm not saying you're mad, but the brain is weird and we can do things we don't realize.

Also: get the flat checked for gas leaks. Carbon monoxide poisoning can cause visual distortions and a feeling that things are moving.

If you're genuinely seeing objects move in real time, you need to start documenting it. Video everything, note times and locations, keep a log. Not because I think it's definitely paranormal, but because if it IS something unusual, proper documentation is essential.

Victorian North London building? If it's poltergeist activity it'll be tied to the location history. Have you looked up what happened in that flat? Deaths, violent events, anything traumatic? The activity often escalates if something triggers the entity - renovations, new residents, etc.

My kettle was on the counter yesterday morning, and I watched it slide backward about 30 centimeters

I experienced something similar in a 1920s flat in Glasgow. Took me two months to figure out it was loose floorboards and the building settling. Old buildings move and shift, especially Victorian ones. That movement can create weird visual effects and cause small objects to migrate. Get a surveyor to check structural movement.

This is the kind of thing that actually warrants serious investigation rather than internet forum speculation. Get a proper paranormal investigator (not a ghost hunter YouTuber, an actual investigator with credentials) to come assess the flat. You're describing something consistent with documented poltergeist phenomena, but it could also be a dozen mundane things.