I have always been yes sir, no sir when pulled on the bike, paid dividends over the years and has got me off many speeding fines and kept license clean. Got a highest reading of 118, second of 98mph stated as āin excess of 70mphā in one car by being polite and reasonable. Never seen the point of doing otherwise when I have been stopped as knew I was in the wrong.
However, I have been next to someone who had recently bought a car and think the problem was not taxed. Car was on the drove so not even sure if a byway is same as a road for tax purposes. The new owner refused to get out of the car when police tried to arrest him. Went from one car with two officers to half a dozen cars and three vans and lost count of police. It was an equinox so they may have thought they could have a riot in the offing I donāt know. It went on for about four hours before he got out of the car and was taken away. Oh yes they had a tow truck waiting all that time as well and car was towed away once empty of people. Gawd knows how much it cost and a pointless waste of resource in my view.
I donāt know the laws on this but watch a few of the cop shows when itās dark nights and I have seen them filmed many times when someone refuses. They show the driver gets arrested, the vehicle driven to the police station and then itās searched. I presume by this (but donāt know) that being arrested alters the rights the police have.
I also know two different people who have refused to open up for police, one saying she didnāt know if they were real police and the other saying they felt they were being put under undue stress and were frightened to come out the car. In both these instances the police backed off to an extent asking them to drive to the nearest police station.
Regarding DVSA I would let them do whatever they want, they can and will seize vehicles. Better to let them get on with it then challenge afterwards if you think they are wrong (unlikely).
The above may make me look a pushover but I am not, I will put my side but in a calm reasonable way. My reaction would change with the way I am treated and donāt forget you have a phone, you can film they at least up to being arrested.