Ah, I see the guy that wired your house also wired my apartment. Kitchen, living room, and bedroom all on 1 breaker with our tiny ass bathroom getting an entire breaker to itself. Who knows what the other 4 breakers are wired to, because every useful plug in the apartment is on one breaker.
Or mine is the opposite … a previous owner installed fluorescent shop lights in my unfinished basement, and they’re spread across three separate breakers
Not sure England's code would even allow it, but maybe there are multiple circuits tied to a few plugs each, and each room shares the circuits in the same config. This I know would be a huge pain to wire, especially when it seems some may be added after the plaster.
Given general lack of technical knowledge and hyperbolic reporting, I wonder if a lot of these are network and phone, even video or audio. That would support the call center idea. It still seems excessive, but makes more sense