In order to get it registered AT ALL, it has to comply to SVA regulations, designed to ensure safety. For example, they are hot on such things as the radius of a curve inside the cabin, switch design etc to ensure no one gets inadvertantly spiked by a nasty corner or long pointy switch stalk.
Fairly simple process, you book a date with the SVA centre, take the car along and it simply passes or fails, just like an MOT. Any remedial work is carried out and you go for a "re test". The beauty of this particular kit / project is that everything has been designed as SVA compliant so you occasionally get the odd niggle from a bad tempered jobsworth examiner but that's all.
Once you have the SVA certificate, you then register the vehicle. If a kit is of indeterminate age, ie made up of second hand, old donor parts from different vehicles, it is given a "Q" plate and I do not believe you are subsequently allowed to change the reg.
If the factory supply you with a "certificate of newness" stating that the vehicle has been assembled from new parts, you are able to get a brand new registration number. This is sometimes backed up by invoices stating "new xyz" if you have bought parts elsewhere. This goes for ALL kit cars. (They are pretty good about the certificates provided you do not take the pee)
No problem buying a half built kit then finishing and registering it, provided it is made of new parts.
I did not want to get into using grubby second hand parts from a scrap yard. I will be using a few parts that are "as new" but that's it. There are very very few used parts available anyway as they are bespoke to Ultima who have either had their own parts designed and manufactured or keep the exact source (of oem parts used) a closely guarded secret.
The entire interior will be built and trimmed by autobionics in leather but that is 18 months away. My current thought is a bright yellow gel coat outside and black leather inside - not sure yet whether just black or whether to have yellow detailing inside too.
First BIG step is to fit all the aluminium panelling.