SORN
Ah yes. I have a Motorcycle (in several boxes) that I have tried a number of times to get a SORN. Nope, can't be done. Why? It is pre 1939. Doh!
For some reason I get the threatening notices about using a SORN vehicle on the road but the thing is not in the DVLA/DVSA/whatever database.
They are welcome to come and inspect the boxes of bits and decide if it can be used on the road.
When I finally retire, I'll get around to restoring it and getting it road legal. Until then, it stays in boxes.
Biting the hand that feeds IT
