I was told, and I believe it is true, that a pilot dropped stone dead outside the 'Beehive' at Gatwick with his new Class I medical in his pocket, having just passed his exam.
Too, I remember this one character talking quite coolly about how, 'Sigh...', it was time to start taking the blood-pressure pills again because his medical was coming up. His friend the Company doctor had given them to him so that he could keep his job as a pilot. Otherwise I guess he would have had to stop smoking and boozing and lose about 30 kilos of top-quality Dutch fat and who would want to have to go to all that trouble?