I have been a customer of Community Fibre for just over two years (since Mar 2023). I first signed up as they first launched on my street. From the first engineering interaction they were great. (I was on the 1Gbps plan at the time)
Installation was smooth, simple and easy. I had my own Wifi in place, and the provided 1G ONT interfaced with my own kit perfectly.
When I moved in Dec 2023, the Community fibre team were great once again. The installation team did the installation to the exact spot in the new house that I wanted - not stuck in the 'useless corner'. Even after replacing my Wifi kit with a full Unifi installation, the Community fibre link was rock solid.
I since upgraded to the 3Gps package in Nov 2024 as part of a Black Friday deal. The tech that came out didn't give me any uphill about my own setup and was happy to work alongside my existing work. The ONT was swapped for a 10G ONT (which has actually proven to be more stable than the 2.5G one I had).

My router consistently gets ~3.1G down and ~3.2G up - at all times of day.

A word of caution: if you're not at the top package level, you will be subject to IPv4 CGNAT, but this is fine for most users. On the plus side, it's a full dual-stack network. (my IPv4 address has been stable for a couple of months now)

I would wholeheartedly recommend Community Fibre to anyone looking to upgrade.