Posting on behalf of my Dad.
He received a PCN for stopping on a red route. My Dad has high blood pressure and diabetes the DVLA is aware. He stopped for barely 1 minute his vision got a bit blurry as he hadn't eaten his blood sugar had dropped so stopped. Unfortunately at the same moment the car with the red route camera was just behind him. Can he will his appeal on medical grounds?
So he tested his blood sugar, what was it?
Presumably the logs from his blood sugar monitor can confirm he stopped for medical reasons, please check if these are available. Even if he can't download them, a simple photo of the blood sugar monitor showing the reading with the time and date would suffice.