You can be fined up to £1,000 if you don’t tell DVLA about a medical condition that affects your driving. You may be prosecuted if you’re involved in an accident as a result.

Check with your nurse or doctor if you don’t know what type of medication you’re on.

Read leaflet INF188/2 for more information about driving a car or motorcycle with diabetes.

Diabetes treated by tablets or non-insulin injections

Car or motorcycle licence

You must tell DVLA if your tablets or non-insulin injections may give you low blood sugar (hypoglycaemia). Fill in form DIAB1 and send it to DVLA. The address is on the form.

Ask your nurse or doctor if you’re not sure if your treatment may give you low blood sugar.

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 insulin

Car or motorcycle licence

You must tell DVLA if your diabetes is treated with insulin.

Fill in form DIAB1 and send it to DVLA. The address is on the form.

Read ‘A guide to filling in your DIAB1 medical form’ to get help with filling in DIAB1.

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 diet

Car or motorcycle licence

You don’t need to tell DVLA.

Bus, coach or lorry licence

You don’t need to tell DVLA.

Read leaflet INS186 if you want to apply for vocational entitlement to drive larger vehicles (C1, C1E, D1, DIE, C, CE, D or DE).