._.

https://youtu.be/S8O1sruSO2U?si=GQ3OLDdrTUoB_bYl

Fuse box for a alarm system it looks like. Shows up at 28 seconds

Ah, that's a European headphone outlet. It's for listening to authentic house music.

KnightsBridge 13A White Connection Unit 3 Amp Fused & Flex Outlet Electric Wall Plate

That's the secret internet off switch, DON'T TOUCH IT JEN!

Fuse box for one line. Fuses weren't put in as standard when electricity was introduced. Many old houses just had live wires coming in with no breaker like today. For expensive electrical items added when there was no fuse, an electrician with install it with a dedicated fuse. If the electrical system has been updated where it enters the house, it may no longer be needed. However, if it is on a different circuit, it may be. Old fuse boxes were a bunch of replaceable physical fuses. Nowadays they are breaker switches for easy resetting and less waste.

Anyway, if whatever is connected to this gets a power surge, the fuse could trip and you would need to replace it. However it is not a plug, to add a different device or appliance, but just a safety pass through for the wire coming out the other end.

This is a fuse box, with a flathead you should be able to open it and/or pull a small tray with the fuse itself inside. You Brits do your electrical wiring with ring-shaped circuits and put a fuse in every outlet.

This kind of outlet is intended for things you don't unplug and a socket doesn't make sense, usually boilers, ovens, stoves, ACs, alarm systems as already commented...

Not a plug, but a fuse box - that small panel would open up/pull out to let you replace the fuse. Couldn't tell you what it's for without more info

Here's how to find out: use a small flat screwdriver to pull the central white thing out. It's a cradle for a cylindrical fuse.

If there's no fuse, it's for something that's been removed and they couldn't be bothered to remove the fuse box and its wiring.

If there's a fuse, you have disconnected the power by pulling the fuse out of the circuit. Check if something electrical stops working - alarm, shower, cooker, immersion heater, whatever's on the other side of the wall, loft lights?

Maybe the fuse is there but has already fused, in which case you may want to find or purchase a replacement of the same rating, and find out what electrical thing started working! The fuse rating is written in faint text on the side of the cylinder. If the replace with a higher rated fuse, you allow things to happen in the device that someone thought shouldn't happen and could blow the fuse to prevent damage or injury. If you replace with a lower rated fuse you risk it going in normal use, i.e. too frequently.

Pluggin'

Awww. It looks happy.

PlayStation memory card?

Holding fuses. Probably something else too, but at least I'm partially right.

This panel has a distinctly UK look about it, and I was already thinking that before I read your confirmation. I think only the UK and Ireland use things that look even remotely like this. The rounded appearance also puts it post-war, pre-1980-something because everything changed to be more flat around that time.

As for its purpose, would a bathroom be at the other side of that wall, by any chance? Or was it at some point in the house's history? Heated towel rail is a good bet, for example. You don't want anything vaguely like an outlet in the bathroom (shaver sockets notwithstanding), so wall panels tend to go in a neighbouring hallway or room.

Note that some bathrooms have the light switch on the outside for similar reasons. Others have a pull cord inside the room, which is less able to cause electrocution.

(If you know of a bathroom with a regular light switch inside it, you've found a room that was once something other than a bathroom and whoever remodelled didn't finish the job properly. Or maybe it's in a very badly built house.)

Melba toast