We visit a small but significant business in South Mimms, a shop that makes and sells hair shirts for people seeking to do penance for their sins with some discreet mortification. It's a strange place but the logic of the service - especially if you're seeking to emulate the saints and sinners of the past and use physical pain to assuage your sins - is undeniable. Have a listen; you never know you might want to buy one!

The only university that makes you chuckle AND learn at the same time.