This, straight from the DVLA website at
"
https://www.gov.uk/diabetes-driving"
Diabetes treated by insulin
Car or motorbike licence
You need to tell DVLA if:
· your insulin treatment lasts (or will last) over 3 months
· you had gestational diabetes (diabetes associated with pregnancy) and your insulin treatment lasts over 3 months after the birth
· you get disabling hypoglycaemia (low blood sugar) - or a medical professional has told you that you’re at risk of developing it
You can also
fill in form DIAB1 and send it to DVLA. The address is on the form.
Bus, coach or lorry licence
You must tell DVLA if your diabetes is treated with insulin.
Fill in
form VDIAB1I and send it to DVLA. The address is on the form.
Read
leaflet INS186 if you want to apply for vocational entitlement to drive larger vehicles (C1, C1E, D1, DIE, C, CE, D or DE).
Diabetes treated by tablets or non-insulin injections
Car or motorbike licence
Check with your doctor or nurse to find out if your treatment means you need to tell DVLA.
If you do need to tell DVLA, fill in
form DIAB1 and send it to the address on the form.
Bus, coach or lorry licence
You must tell DVLA if your diabetes is treated by tablets or non-insulin injections. You must fill in:
·
form VDIAB1SG if your diabetes is treated by sulphonylurea or glinide tablets
·
form VDIAB1GEN if your diabetes is treated by any other tablets or non-insulin injections
Send the form to DVLA. The address is on the form.
Diabetes treated by diet
Car or motorbike licence
You don’t need to tell DVLA.
Bus, coach or lorry licence
You don’t need to tell DVLA.