DH is one of those slightly scatty people that bad things keep happening to.
4 years ago he got a speeding ticket. 57 in a 50. There was some confusion over the make and model of car so he queried it. Paperwork came back with correct details so he filled it in, got 3 points and a fine.
However, he didn't read the form properly and what he signed was a failure to provide details (ms90) not speeding (sp30).
He's just had an accident in the car and insurance company tell him he's not covered because he declared the wrong offence, although correct points. Apparently ms90 is more serious.
He is now blacklisted on insurance and his premiums are likely to double - and his car's a right off.
Completely his fault as he should have paid more attention to paperwork but it's making me weep that this is going to cost us so much money.
I'm sure many of you will day he deserves it, fraud etc bur it genuinely wasn't.
Go back to the issuing authority and complain. They have a responsibility too, they need to explain what happened over the mix up to your insurance company. Also complain to DVLA, see what they recommend to do.
So sorry - no practical advice but I sympathise, have never had much luck with insurance either - twice I have tried to claim (once for a cancelled holiday and once for a lost piece of jewellery) and in both cases I was not allowed to claim because of something incredibly detailed in the 'small print'. I think getting good Insurance cover is incredibly difficult, and you have to check every single piece of information.
(I have also moved recently and you must remember to tell ALL your insurance companies when you move otherwise it will be invalid).