Slight thread drift
When I had my company medical the nurse put my urine and blood samples into containers then into a jiffy bag. She stuck an address label on them and apparently they are sent in the ordinary post! I was shocked to learn that!
Class ones and twos: after one year does the class one revert to a class two for the remaining 4 years (assuming one is less than 40)? Or is a separate class 2 needed?
B