Yeah thanks for the heads up on that a while ago.It makes more sense to pay back personal miles with a BEV if you actually use it for work regularly.
All Star have this on lockdown now, they have a system where they hook into your charger and your energy supplier and pay for your EV fuel directly to your supplier. They also give you a RFID that works with most public chargers.
Ironic thing is that I'd actually be worse off on an EV tariff if I pay back at a flat 8ppm and would be better off staying on Octopus Tracker.