My tax expired last month. Been away and just tied to renew my tax but says I’m too late and need to do via post office with my 11 digit v5c logbook number. I have no idea where this is and have turned my home upside don looking for it. Kids start school tomorrow and I go back to work. I’m so confused what to do. DVLA long wait and I cannot get through anyone to speak to. Web chat was unhelpful. What can I do? I’m so annoyed with myself if I had just taken the form with me I could have renewed it over the phone but now I’m 6 days too late