"If you fly your life might well be in the hands of air traffic controllers who have been up all night.. If you have to visit hospital with an emergency, you may be operated on by a doctor who has worked twice as hard as any pilot or controller..... There are plenty more people in the world who manage their working hours without being unduly fatigued - I did it for nigh on 40 years. It's just a matter of managing one's life appropriately."
Years ago (early 80's) I flew PA 31's out of Kidlington. I recall a couple of controllers from LHR flew for an air charter company there too. In speaking to one he routinely used to say that after/before flying a full dat at Oxford, he had a full shift at LHR ATC. I was always impressed at how he managed to be up for 24 hours straight doing two jobs!