I used H2Eco in Poole and couldnt recommend them enough. Had the Tesla Gen 3 charger installed, with an Matt-E earthing box. When discussed for the quote i wanted the Matt-E box outside as we didnt have much space inside, however the installer siad it shouldnt be a problem so installed inside with the expectation of putting a cupboard to contain all the electric boxes (Fuse panel, Solar E-stop, Solar export meter, Matt-E) however it hummed so loud we had to turn it off during the day, so i got them to come back and move it outside anyway. They also do Powerwalls, solar installs and heat pumps.
All in came to £636 for the install, and £475 for the charger. It was better this way than any other chargers, and i wasnt fussed out solar use as i export most of the time, and if i do want to use solar i adjust the levels manually to match the charge rate to solar generation.