"As the years have passed", writes Will Self, "so gnawing on a bloody piece of cow rump has come to seem, to me, more and more...well, vulgar".

Via Leviticus and Arcimboldo, he charts his conversion to vegetarianism.

And he explains why it's not just personal morals that are "propelling me headlong towards the horror of Quorn"!

Producer: Adele Armstrong.