I can't find the bit that says the vehicle has to be tax'd to be insured! (Maybe I'm just being thick though!)
I really need to SORN my bike as the insurance has run out, but it's got a bit of tax left on!
The idea is, if its the vehicle is taxed its being used or intending to be used on the road. So it must also have valid insurance.
So if its still taxed but not insured, you either have to send the tax disk back and declare it sorn or insure it even if you don’t plan on using it.
And once it registered on the database that’s its taxed with no insureance, they will automatically send the letter.