There is an excellent piece on Christopher Nolan by Will Lloyd at The New Statesman.

“Everyone knew the pecking order at Haileybury and Imperial Service College. The hierarchy was built into the boarding school’s dormitories. Long wooden-floored barracks, under low ceilings, without any decoration. Two parallel rows of identical iron-framed institutional beds faced each other, stretching along the walls. The youngest boys at one end, the eldest boys at the other end. With each year that passed, a boy would steadily advance up this chain, gaining in status and strength, and with it, the ability to police the younger boys.”

Read more here.