Looks like the Single Vehicle Approval preparation and test may be one of the governing laws, in this case, along with other things:
used cars for sale UK new cars commercial vehicles
As I understand it, from a quick google search, These could include possibly, and not be limited, to:
MOT testing and fees, registration + number plates, road tax,
emission and noise tests, addition of a security immobiliser, and possibly a certificate of conformity needed to be provided by Daimler Chrysler, shipping and terminal fees, VAT, and possibly a MPH speedometer and proper lighting.
There appear to be questions also, about how long you have had the car abroad, it's mileage, and whether you plan to permanently reside in UK and plan to keep the car for private use (like "settler's effects" in Canada)
I'd take nothing for granted, here. good luck
<--- superschnelle 300 hp 10:1 ECE euro HV, Hochverdichtung = high compression (11/2011) ... Wie im Freien Fall. Nur horizontal.
"I swear to god, it's like I live in a trailer of common sense, and stare out the window at a tornado of stupidity." >'='<