The £1000 home charger does not charge to 80% in 30 minutes. With the home charger it takes 7-8 hrs to charge from completely empty. Having said that, the car is hardly ever completely empty and it charges overnight so charge time is pretty irrelevant. In any case... these home chargers can be obtained and installed for about £800 and the price of them is coming down too.
What you were thinking of when you talk of 30 minutes to 80% is the commercial fast chargers. There are 26 of these fast chargers at Nissan dealers throughout the country and more will be installed commercially over the coming years.