South Ayrshire, can recommend the EV guys, polite and tidy installers, fair bit of under floor messing about required to get to my garage from the fuse box, and tidied up some gash wiring from before we moved in (11 years ago). I had a zappi installed, having initially wanted the Hypervolt, based purely on looks, but the recent compatibility issues put me off, and also a few issues with it finding Virgin BBand hubs, so i changed to the less attractive looking zappi which I’ve managed to get fitted in the garage. It has an app which monitors the electric use for the whole house. So far happy with Zappi. And the installers.