Britain imports radioactive isotopes to detect and cure cancer. Border chaos at Dover would make them useless in the event of a no-deal Brexit.
The [Yellowhammer] documents themselves outline that there are risks to the supply of medicines - but do not set out the detail of how those risks have been mitigated, and what doctors and patients should do to plan for the possibility.
A no-deal Brexit will be grim for patients. Yet gagging orders are being used to keep the truth from coming out.