6. John Caudwell

If you have constructed your multi-billion dollar enterprise, you will definitely find ways to not blow your fortune on just anything. Caudwell went from a Michelin engineer to a cell-phone giant. This self-made billionaire has some frugal habits, which some lavish billionaires might not like to adopt. Caudwell cuts his own hair because to him, going to a barber wastes time. This Brit is truly a lover of affordable clothing and gets his clothes from Marks & Spencer. He might enjoy wine but would rather spend a 2 figure sum on it and not a 3 figure one.