What happens to documents V5C / MoT / tax when my number plate changes?

What happens to my car documents when my number plate is changed?
Your V5C Registration Document (also known as the log book) has the existing registration number printed on it. When the car has been re-registered under your new private number plate by the DVLA, you will receive replacement V5C Registration Document.
You will not receive a replacement MoT Certificate, but the DVLA's systems are updated automatically. So just take your vehicle for MoT as usual.
Tax discs no longer issued after 1st Ocotber 2014.
What happens to my personalised number plate when I change my car?
When I change my car in the future, what happens to my personalised number plate? Can I transfer it to my new car? How long does that take? How do I do that?
What happens to the registration number already on my car?
When I get a personalised number plate, what happens to the registration number already on my car? How can I get it back when I sell my car? Questions answered
Why do you need my vehicle documents for the number plate transfer?
Why do I have to send my vehicle documents to transfer a private number plate? What happens to them? Will I get replacements when the registration is changed?
What documents do I need to transfer a private number plate to my vehicle?

What car documents do I need to transfer a personalised number plate?
What if I don't have my V5C Registration Document? Find out what you need and how to apply.
I paid a deposit. How and when do I pay the balance?
I paid a deposit on a private number plate. How and when do I pay the balance? What happens after I've paid?
What if I need to change the nominee name on the V750 Certificate?
If you decide to put the registration number onto a vehicle registered in to someone who is not named on the Certificate, you will need to ask us to change the nominee. Fees apply.
What if the V750 Certificate of Entitlement runs out?
If you won't be ready to transfer the registration number to a vehicle before the Certificate expires, you will need to ask us to extend it for you. Fees apply.
You can extend as often as you need to.
What happens to my private number plate when I sell my vehicle?
When you sell your vehicle later on, you may wish to keep your private number plate. You will need to apply to the DVLA to either transfer the private registration number direct to another vehicle, or retain the number onto a V778 Retention Document. DVLA fees apply.
When the DVLA processes your application, they will provide a standard (age related) registration number to replace your private number plates. This usually the original registration number that was on the car before. But this is not guaranteed.
What should I do with the V750 Certificate of Entitlement?
You must transfer the registration number to a vehicle in the Nominee name (on the Certificate) before the expiry date on the Certificate.
Take (or send) the following to the DVLA. Address is on the V750 Certificate of Entitlement:
- V750 Certificate of Entitlement (complete the Assignment section)
- Full V5C Registration Document for the vehicle*
*If you have just purchased the vehicle and don't yet have a V5 Registration Document, the DVLA may accept the green New Keeper Supplement slip accompanied by a DVLA V62 form.