So much effort that goes into making sure you display your proof of paid tax disc, you would think it is all a money making scheme wouldn't you. I have taxed a couple of weeks after the due date down to plain not being here to tax my vehicle, but my vehicle has been kept off the public highway. As usual you get the frown at the post office and the question have you used the vehicle on the public highway as if anyone would these days with all the number plate recognition in place, but it's been no problem. The trick of course is keep the vehicle off the road until you have your proof of having paid the tax, oh and yeah SORN, if it is staying off for a while, but honestly the trouble they go to over vehicles is unbelievable, but then perhaps they will seeing as you have relinquished your vehicle to the government and you are only the keeper, not the owner.