My current energy supplier Igloo energy has a limited EV charging tariff compatible with Tesla and Rolec chargers. On a wider point, Paul Lewis was tweeting today advising people to take a photo of their electricity meter as some energy companies have gone bust recently.
Sorry, looking at this a bit more closely it is actually smart charging for when there is a light load on the grid. They do give you 100 miles a month though.
Kia Soul 2020 EV