I have bought an off road bike which has a current MOT. The MOT has no restrictions on it, such as daylight use only, however the bike only has a mileometer fitted. Is it legal to ride on the public highway with no speedometer, as I have been told by one MOT station that it is ok, and by an off road dealer that if its over 100cc it will need as speedo. Who is right, or are they both wrong?