Change address details on Log Book (V5C) when moving.
If you had received correspondence, a text message or a visit from an enforcement agent regarding a Penalty Charge Notice that you had no prior knowledge of, it is almost always the case that all correspondence from the local authority had been sent to a previous address.
How to update your Log Book (V5C) online with DVLA
It is very simple indeed to update your Log Book online. You will need to have your previous V5C to hand as you will need to provide the 11 digit document reference that you will find on the front of the V5C. The DVLA website link is here.