My understanding is that you can no longer install a 'dumb' charger for an EV - it needs to be a 'smart' charger (nothing to do with the meter). The charger will have the capability of informing the electricity supplier when an EV is being charged.
You could, of course, hook it up to a 13 amp socket which would supply 10 miles of range per hour - or 40 miles during the cheap rate - instead of 31 miles of range per hour through a dedicated 7 kWh charger.
The government will need to replace the financial hole that EV's will create with missing fuel duty revenues - road pricing, EV charging levies... they'll find a way.