As Dangriff says really! There is only 1 reason why someone would leave “previous keeper only” details adn that is they are up to something dodgy, add in the no MOT and they clearly are up to something very dodgy. As already mentioned this is shooting your (and our)insurance premiums up, un insured drivers get away with murder, and the Motor Insurance Bureau stump up (hence our higher policies). No MOT .. mmm dodgy AGAIN!
What police force are you? Either crime stoppers or ring the local police and tell them you want to remain anonymous, again there will be a roads policing intelligence department who will receive this information then one day catch up out (hopefully).
If he knocks someone down as his car is fecked becuase he hasn’t had an MOT..how would you feel then?
Stop wasting your time on STW and report it.
Ps you’d be quick to get on STW and moan and bit** if you got hit by an uninsured driver with no MOT, so this is no different.