I’ll kick off… I’m in North London, I have a 19 panel install with micro-inverters over three aspects.
I would have had got a system installed on the last day, literally, of the high FiT rates in 2010 but after the guys were on-site and already at work it was found that the roof tiles had almost all blown and were too fragile to install onto safely. I spent that money instead on a new roof (tiles only, luckily, as the rest was fine).
Once I went for a PHEV I decided to get a system installed at the same time as my car EVSE in 2015. It’s been better and worse than I thought, and having a system to monitor it all has made a big difference. Over the last couple of months I’ve finally got around to controlling the EVSE to divert spare solar when not requiring a full rate charge. Working well after some false starts.