Quick update on this.
The work has been ongoing since I left this thread, and things have gotten worse.
The blokes have been staying progressively longer each evening, last night (friday) they stopped with the power tools at 7pm.
This evening, they stopped at 7.20pm. Now, I have been in contact with the noise officers at my council and have been informed that the acceptable hours for noisy constructions works are:
Monday - Friday: 0800 - 1800.
Saturday: 0800 - 1300.
Sunday: No work noise allowed at all.
The workers have been completely disregarding the weekend regulations from day 1, and have started going past the weekday regulations too. I have been told to keep a record from now on of work times and vehicle license plates.
I just want to make it crystal clear that I have NO problem at all with people working, or builders' works going on, but it has to be at reasonable times.