I agree it is only a small minority of the UK motoring population . I , personally , have two of my three current cars insured , although only one is actually being used at present - a couple of months ago I had five cars , with one of the policies on one of the cars I subsequently sold ( before I transferred it to the car it is on now ) .
Even Classic insurance these days can cost a bit , so it is not uncommon for people with modest collections to switch insurance around between different vehicles at different times , rather than keeping them all insured all the time - with VED being zero on a lot of these cars , there's no point in SORN-ing over the winter or whatever . I did at one time have a policy which allowed me to cover up to 6,000 miles across several cars , but the certificate just said 'any car the property of Mr Derek XXXXX' rather than listing registration numbers , and I know of others who have had similar policies .
This scenario probably applies to quite a lot of people in car clubs , with 'show cars' etc .
I fully agree , though , that those who flout the law should be severely penalised - my feelings are just that the existing laws are sufficient if only they were used more fully - ie harsher penalties imposed on those being caught ( fines of AT LEAST five times what the insurance would have cost and/or jail , especially in cases where the offence came to light as the result of an uninsured accident ) would stop those who think driving uninsured is an easy option . Confiscation of the vehicle should be automatic in all cases - even where the vehicle is insured but the driver is not insured to drive it , this offence being just as serious ( I have suffered from this one when daughter driving daddy's BMW wrote off one of our cars parked outside - the BMW was insured , but not for her to drive - so the database would not have picked up this offence , nor would an ANPR check - sometimes old-fashioned policing by a cop who 'has a nose' for what is right and what is wrong is the best way ) . If daddy had had to forfeit his BMW , he would have made darned sure daughter would not have been driving it in the first place .