I am with OVO
The charger they fitted was OHME
The app is good – I find it easy to use and when it is plugged in you can pre condition car whilst sat in the front room – great on frosty mornings – no more scrapping or waiting in the car – also useful on hot days if car is in the sun – if this is any use to you I’m happy to send you a pic of charger on the wall 👍