will someone explain why insurance should be high for someone with any type of diabieties??...as yep it is a reportable condition...should reported by the doctor not the person that has it but just as long as you look afater your diet whats the difference...one thing you would have is a restriction on your licence allowing you to drive up to 3.5 tones,as for being visually imparied makes no difference if you have one fully functioning eye you can drive...i used to work with an enginner who only had one eye...lost the other one in a car accident 
Only Type 2 (maturity onset) Diabetics can conrol their condition via diet, Type1 are Insulin dependant & more susceptible to a Hypo as their blood sugar levels are more erratic
well that is why blood monitors are given out free to every diabieties sufferer..you dont just keel over you do have a warning that you are about to go hypo...i agree whilst trying to get blood sugers down there would be a restriction on your license but once medication is sorted there is no reason not to give a license...oh and diet is important for type 1 and 2 
There is a bit more too that TAM. In fact you can unless you are very lucky and can quickly get hold of some Dextrose or simply a load of Coca Cola / chocolate, etc.
I, and other Type 2 diabetics I know have had a number of hypos, even though we do everything to avoid them. You have your readings, eat your set meals, and take your insulin dose. Most days no problem, but then suddenly you find yourself out and about and getting very hot, then shaking, with the world drifting away from you..............!! Thank goodness it has always happened to me when going around shops, where what I need to bring me back is all around me. I have grabbed whole bars of chocolate off supermarket shelves before now and munched into them!!

Paying later of course!
Usually I have Dextrose in my handbag for such emergencies, but sometimes plans go wrong......wrong place.....wrong handbag......wrong time, and that is when you can panic!

The chap who is the subject of this thread apparently has serious diabetes, and
may, although
I am not sure, already have lost the sight in his eye, with the right, good, eye "weak" due to the disease being at an advanced state. Diabetes in everyone can never "get better", it usually gets worse as you age. Eyes, all the main organs of the body, eyes and limbs can all suffer severe damage from the desease.
Once more, I just hopel the DVLA are fully aware of his condition and are happy for him to drive.