Interestingly I've just received a letter from the MIB (Motor Insurance Bureau) about a DT400 I bought in December 23
It states that according to their records the bike is not insured which is correct as it's currently sat partly assembled in my front room.
When I checked on the DVLA database it says the bike is 'Taxed' until June 2025
I know when I got the bike I had to apply for the V5 as it had been lost. As soon as I received the V5 back from DVLA I went down the Post Office and they did the relevant things to get the bike registered as 'Historic' therefore making it Tax & MOT exempt.
All I can think of is that when DVLA registered it as Historic the Tax clock started ticking so as soon as I dig out then V5 for it it I will SORN it again
Why the MIB are involved in this is beyond me as it does mention giving me 28 days to sort this out and the word 'fine' is mentioned