Why hasn't the DVLA responded to me for over a month?

I've had to surrender my medically-restricted, yearly license for a year on medical grounds. It was due to expire November this year and I was planning to reapply in September. Unfortunately, I need to...

I am no longer able to drive on medical grounds - can I still insure a car if my son drives it?

I have been advised on medical grounds to voluntarily hand back my driving licence to the DVLA. My son is a named driver on my insurance policy and he is willing to drive for me if I wish to keep the car....