Do you need fast charging at home? We just charge our electric car overnight from a normal UK 240V 13A socket in our garage.
.8*120*15 = 1440w vs 230*13 = 2990w
You can only use 80% of a load on a breaker in the US, AFAIK UK receptacles are fused which allows using 100% of the listed device ampacity instead of 80%. I could be wrong about that last part though.