Yes that is something I’ve weighed up, but a charger installation was around £500 when I last looked, it seems MUA then install a separate meter which I assume they’ll be another fee, it’s also only for off peak electricity, handy for fridge/freezer but I wouldn’t be able to run the likes of a washing machine at night without annoying the neighbours.
Anyone buying a new EV will benefit from a service plan, things like charger installation but will be absolutely hammered with depreciation which will likely wipe off any savings initially made. In the second hand market the servicing difference between an EV and regular ICE car isn’t that much, I service my own car and the only difference would be oil, oil filter and an air filter, oil + filter costs me around £40 every 6 months, air filter was about £8 and I replace that once a year.
VED is the same price as my current diesel, I get 55-60mpg consistently and I rarely have any need to park on Douglas prom so again, no benefit there.