Consumer or business, no difference in our village
Openreach installed fibre to the cabinet a few years ago. On doing so, the analogue copper line suffered such noise that the ADSL kept getting knocked out, and noise was audible on the phone.
An openreach engineer did a quiet test after diconnecting all my equiment, and confirmed the noise is outside the house.
No grade of connection is going to sort that. The broadband was changed to the FTC service at a discount, but the phone has been noisy for years with no end in sight. I'm due to renegotiate with the ISP in a few weeks, so I'll be talking with them about VoIP, as the service is a bit of a joke.