I agree with Jopar, if you need 3rd party intervention then you are clearly at risk of not recognising a hypo at the wheel potentially harming other drivers, pedestrians etc.
Shame on anyone who lies on their re-newal form, these regulations are in place for a reason, because unfortunately these things happen and it's other people's lives at risk as well as your own if you get behind a car wheel knowing theres a slight chance you may lose control. Imagine if it was your loved one who came to harm at the hands of someone who had lied on their re-newal form and lost control as they have no hypo awareness.
If you cannot recognise a hypo, you should not drive, if you have a seizure you should not drive, if you drink alcohol you should not drive, if you take drugs you should not drive. It's all the same, it's law because it does happen, even to the nicest of people. Laws are put into place to protect.