You'll need the SA registration document. VAT and duty will be paid on landing UK.
I brought my westy in through Felixstowe, paid all the taxes there and that just lef the VRT flat fee here.
BTW, when I brought the BMW in I didn't have the current V5 (seller was away on business when I picked it up) so I just gave the NCT an old one I found amongst the paperwork, it was from 1990 something. They were happy to accept something that looked official.
I brought my westy in through Felixstowe, paid all the taxes there and that just lef the VRT flat fee here.
BTW, when I brought the BMW in I didn't have the current V5 (seller was away on business when I picked it up) so I just gave the NCT an old one I found amongst the paperwork, it was from 1990 something. They were happy to accept something that looked official.