DVLA come in for a lot of criticism but my recent dealings with them show that they can also perform well. A few weeks ago I bought a new (to me) motorhome and within 8 days of purchase received the new V5 showing all details correctly. Tuesday of this week I went onto their internet site and assigned my personalised registration mark to the new vehicle and today Thursday) I received the amended V5! You can't complain about that service.