If I were you | would check with a local MOT station as to whether they will sign off on your car as it is (if it's a VDRS form, you need to go to an MOT testing station anyway) as I'm not sure they are illegal.
Also, once it's done (assuming they are good with it), photocopy the form and keep it with you. Also, look up the construction and use regulations to make sure you're ok.