I just bought a car and promptly managed to lose its MOT certificate. I've looked up the details online b/c I have the document reference number from the V5C registration certificate so I know when my current MOT expires. Am I legally obliged to actually have an official piece of paper though or will I need it in order to get my next MOT done? I now have a printout of the online DirectGov page and am wondering if that's all I need.