got mine in 3 days Dunc. Then send (or take) the V750( remember and fill in the RA details and sign it), your tax disc, MOT and V5C to your local VRO (send special delivery incase the docs go missing!) I'm presuming yours is in Aberdeen?
Aberdeen
DVLA Local Office
Greyfriars House,
Gallowgate,
Aberdeen,
AB10 1WG
I sent mine on Monday (to edinburgh) and got the new Tax disc back today