i3 pricing is nationally set by BMW UK, and one of the conditions of being an i dealer is that it is not varied.
I assume the i8 is subject to the same deal. In another universe I'm sure that dealers are going the other way, as i8s are being sold on at up to 50pc over list, but not this one.
Having some insight into the relationship between dealer and the UK business, and having dealt with almost all of them, it's clear that the integration and workability of that relationship is second to none. Some UK OEMs practically have open warfare with their dealer networks, by comparison.