@Huffpuffin I left the scheme last August, first thing you need to do is contact DWP/PIP and request a new “Certificate of Entitlement” as you have to have a new one every time you change your car (doesn’t apply for Motability) You will need a V62 in order to change the taxation class to disabled and can only be done at the post office, one thing to be aware of though is to NOT let the post office stamp the certificate in any way at all (the old type was good for 4 years and needed stamping every year, not so with the latest and any stamp will invalidate it immediately) as some P.O. staff still want to do this STOP them before they try, this way you can then use the same form every year to renew online.
I did the same as you last year and left mb after 15 years. The grief I had in getting my “certificate of entitlement” then was bad enough as they firstly sent me a *letter* of entitlement stating my PIP amounts despite me explaining clearly what I required. And now … guess what? Yes, I just checked my certificate of entitlement and it was stamped by the post office at the time! ??
my question is, can I still not just reuse it when I renew my free tax online? Tax runs out on 31/3 and I doubt I’ll get a replacement Certificate of entitlement in time knowing the efficiency of the DWP.