I had this issue in late 2019/early 2020. Close neighbors were building an unpermitted extension to their house and used another neighbor to basically DIY the project.
Noise included bandsaws, tablesaws, impact drivers, sanders and other assorted high-decibel power equipment that could and often did start at 6.30 am. Because it was just one guy, he'd be pooped out by noon and then just go home and the noise would end... until 6:30 the next morning, lol.
He would work on it whenever the fancy struck, so this awful noise lasted months and months, but it was highly intermittent. Sometimes we'd go weeks or even months without any work on the project and it sat there half finished. I hated looking at it because I knew it had to start up again eventually.
For that reason I did not mention it on my listing, just took a chance that he would be "off" that week, and I lucked out.... had guest after guest stay who were not affected at all...
UNTIL the guest from hell checked in. Mind you, she was already a piece of work before any noise started and upon arrival was whining about the "rain" ("When is this rain going to stop? Why is it raining in Hawaii, I expected it to be sunny." To which I answer... "We love our rain, it comes every afternoon, it's why we are green. As you know, without rain we would be a desert island..." Eye roll, what can you say to these people? )
Sure enough, on cue, the neighbor DIY noise starts up basically the next morning of her check in, and I knew my luck had run out.
She did write to me to complain and I mentioned I was sorry, but had no control over the neighbors, nor did they offer me their construction schedules or timelines. I did offer to let her return at a quieter time to make up for the inconvenience, but I received no response.
She said no more until on her way to the airport, when she slammed me for the noise, saying I should have let her know like a hotel would. (She had booked months ahead of this and I had no idea the neighbors were going to do DIY.) Then begins extorting me. "If you don't refund me a significant amount of this booking I will leave a review. I will give you three hours to offer a refund or I will review accordingly." I took a screenshot of this conversation and didn't answer. Called Airbnb and they assured me they would remove the review if it was bad because of her violation. Knowing I'd get slammed, I wrote one of her and portrayed her accurately. Did not recommend this guest!
Airbnb did as they said and immediately removed her review, although mine stood. Heh.
Bottom line, what happens outside of our property lines is out of our control. Other homeowners/neighbors/construction companies do not owe us their construction schedules and timing.
These projects can take a while. It's not your fault if someone down the street is making construction noise. Do you think a hotel in New York or any other large city would refund because of construction work on a skyscraper nearby? Or even in their own building? Your city of London seems to have a constant building boom. As such, it's just part of life there. We don't know when they are going to start, when they are going to stop and how long it's going to go on. We are only responsible and accountable for what happens within our four walls and property perimeters.
That said, you could issue a disclaimer in your listing.
Though the project is done, thank god, I have added such a disclaimer to my listing: "this is a family neighborhood and you may hear typical sounds during the day including dogs barking, children playing, construction/remodeling on homes, neighbors working on DIY projects or yardwork attended to with power tools. This activity is simply a part of living in a neighborhood, is out of our control and we cannot issue refunds for unforseen and unexpected noise in the neighborhood."