[Update at end of post]
JOHN WALKER SETS THE SCENE
But there are parts of the book that are at least based on fact, and that may be explained by seeing how it came to be written. Until prompted by John Walker, formerly of Rochdale Alternative Press, the paper whose revelations were more widely publicised by Private Eye in 1979, and Paul Waugh, who, with Walker’s assistance, ran a piece "Cyril Smith - some justice at last?" on 27 November 2012, on PoliticsHome, Danczuk had not been involved.
[UPDATE 29 October 1250 hours: Les May of Northern Voices has advised he is sure the Commons debate took place on November 13, not 27 as in John Walker's account]