I’d imagine it’s probably someone with the cash / resources to quickly turn it around and rent it out so they don’t really care what it looks like as it’ll never be their home, they’re probably happy enough to proceed knowing it’s 3 bed/1 bath and avg rents down that road are £xx.
We’ve had it with 2 properties down ours, one of them has massively backfired on the bloke who didn’t do any of the work needed on the property (which is disgraceful really, it’s a nice road and the house sticks out like a sore thumb because it’s not been touched since the 70s - previous occupier died). He wanted the most money he could for it, so rented it out to “unhousables” who’d been evicted previously or summit (his words, not mine!) for bounty money off the council - he is charging them an extra 40% on what my neighbour rents their nice modern house for. Somehow they’re not paying him rent though, but obviously no one can get evicted due to covid, and he’s now on the brink of bankruptcy apparently as he has a huge mortgage on the thing