Something else I should probably read is Christie Malry's Own Double-Entry. At least going by this excerpt from Frank Kermode's review, in the London Review of Books, of Jonathan Coe's biography of its author, Like A Fiery Elephant: The Story of BS Johnson.
The most amusing of the novels (and Johnson had considerable comic talents) is the brief Christie Malry's Own Double-Entry (1973). Christie is a clerk in a Hammersmith cake factory (as Johnson himself had once been). Having mastered double-entry book-keeping (which I have heard described as the invention that made the modern world possible), Christie applies the principle - 'every Debit must have its Credit' - to his own dealings with that world. Whenever he suffers an injustice he credits his side of the ledger appropriately. Beginning with trifles, he progresses to larger evils. 'Socialism not given a chance' is balanced by £311,398.