theses days you should be able to check , the MOT status, via internet ,..and i think this check , is frree .....if you are on your "partners" , insurannce , was the reg, NO of this van , on his policy .... if it wasnt , you were uninsured ........ if he is a policy holder , on a fully comp basis ,.....his policy would allow him , to drive any other vehicle not belonging to him , by virtue that he is the POLICY HOLDER ,,,, you sounf like you are a named driver on hid policy ,,,,,,, so i suspect if you have been reported for no insurance ,,,,, the police have excercised their powers correctly ..