Like many others I have not used my TR since last Sept so reduced my insurance to "Garaged no driving on public roads" . I now have a letter from DVLA (Mid) "motor insurance database" advising if I don't Sorn the car now I "Will Get A Fine"
I have now put car on Sorn, when I restart the Insurance, hopefully later this year, I need to re Tax it which takes it off Sorn As its historic class for tax, zero rated there's no cost involved but once again could incur a Fine if not done.