Until I read his enthralling account of what it’s like to be a middle-class sixtysomething crack addict, I’d never quite appreciated the genius of William Donaldson. I know his Henry Root letters are supposed to be very satirical but I found them a bit hard going myself — like a complex in-joke that you really need to have been somewhere weird like Harrow to understand. Initially, I felt the same way about I’m Leaving You Simon, You Disgust Me. Like Root, it’s sure to be found in every middle-class downstairs loo everywhere by the time Christmas is over, but on my first flick-through it seemed to me to fail in its most important duty: casual browsability.

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