I also rented a Jeep Avenger EV a few weeks back in the UK, several smaller, out of the way vendors still required their specific App and where contactless payments were an option it more expensive at around 80 to 90 pence per KWH. A week into the hire I found I could use my Tesla app and the supercharger network to charge my rental and the max there is only 51 pence per KWH and the supercharger network is expansive just works. An EV is a good option for the UK if you prefer automatics or EV's I will certainly hire one again.