The car dealer from whom I ordered the car was very helpful and processed the BP order promptly. I provided all the necessary information and photos to BP within 24 hours, but BP unnecessarily involved SSEN DNO with my application and failed to progress SSEN with their (unnecessary) review. SSEN were extremely slow and needed continued chasing to come out and review my installation to confirm my 100A fuse was 100A. The SSEN told me that my meter tails needed to be 25mm; they were and the engineer was wrong, but otherwise he was polite. BP then lost the authorisation to proceed with the install, so I had to progress it for them. BP then unnecessarily tried to block my install as I insisted on a Type B RCD - they said none was necessary. I think they were trying to sell me an unnecessary isolating switch! I demanded they provide evidence that a Type B should not be used, and they eventually backed down after providing no evidence. I was threatened with no warranty if I changed their 6mm cable. The BP engineer performed the install in 90 mins, was polite and proficient; we debated the merits or otherwise of 6mm/10mm cable and his opinion was different to my electrician - even now I am unsure who is correct. The engineer install was the best and most professional aspect of the BP job. The charger construction is not particularly rigid, and far weaker than the Tesla charger I have. I have received NO certificates from BP.