If you buy a car but don't part x your old one & sell it privately, how does the insurance work? Do you have to keep the old car insurance till it's sold, as well as the new car insurance? What if someone wants to test drive it? Are they insured, even if the car being sold has no insurance?
if you are keeping the car on the road, then yes you must maintain insurance on them at all times. The trick is to sell it very quickly. As far as i'm aware insurance does not cover people test driving your car anyway
you can ask your insurance for a secondary car cover temporarily while you sell your old car. There is a small fee to pay and then both cars are insured. a lot of garages do this now when your car is in for repair.