I have recently notified dvla that I have been put onto insulin. I received a letter back yesterday stating I must return my full license in order to now be issued with a three year one. The letter also states my license must be returned within 14 working days otherwise it will automatically be cancelled. In my personal opinion the letter is not clear whether you can continue to drive on the basis of sending your licence back! Obviously, during this time you do not have a physical licence you can produce should you need to! What’s your experience of notifying dvla when put onto insulin????