They're currently installing fibre to my complex, but after doing the research, I'm sticking with my ADSL.
1. Hellopeter is full of issues, negative reviews and responses that are not helpful.
2. Mybroadband has other threads like this one where their infrastructure is slated, and their service response are deemed nonexistent.
3. Woe betide thee if thou art using their partner ISP Fredd. Similar story for complaints for this company across various online platforms
4. Relative has had combination of TT Connect and Afrihost and has had various issues with downtime and slow speeds.
I'd be interested to hear how they respond to your issues.