| As a note on the first point of the regs, most doctors are also reasonably flexible. In my experience, what I'd define as a hypo and what the medical establishment define it as are two very different things. Doctors seem to consider a hypo to be an incident of low blood sugar that incapacitates you. whereas I've always considered a hypo to be when I get a bit hungry below 4mmol/l.
The irony is that the tighter your control, the less likely you may be allowed to dive. Those with A1Cs below 6 are likely to be considered as running nearer hypo territory and so might be refused a medical. Those between 6 and 7 will probably be considered to be well-controlled but with a greater margin for error. | 
