The process was very frustrating. The member of staff I dealt with made me take a lot of photos. He sat on them for a week until I called up, then he struggled to find them. When he did he told me I needed an isolator switch, so my fitting date was cancelled until I had achieved this. Particularly annoying as I had ordered a new car and the car was possibly now going to arrive before the charger. Next up I was luckier and spoke to the team lead who got my original timeslot back. She also then told me what the first person should have i.e. that I needed my meter tails, wires, and fuse upgraded to 100amp by the power co. and the energy provider! I think the whole process could be improved with a proper summary of all the things you may need for a charger rather than the photo debacle and drip feed of information. The fitter arrived and had never fitted a BMW charger before. He did a super job with the wiring/installation but we were then left with a charger that may or may nor work. With a friends car, and some changes to the software config of the charger we finally discovered had a working charger. I think without having installed a BMW charger the installer was unaware that it needed about 5-10mins to startup ( his boss thought a few minutes ) Largely a bad experience. The team lead was good as was the electrician but overall it felt like better process/information/training is required at chargemaster.