The sensational account of a supposedly fictional cabinet has been branded a tool of revenge by some newspapers after he left his post amid the after-effects of leaked email controversy 'Spingate' in May 2002.
Sixsmith's departure followed the publication of an email sent by transport minister Stephen Byers's special adviser Jo Moore, whose suggestion that the 11 September terrorist attacks were a good opportunity to bury bad news prompted a hat-trick of resignations: her own, Byers's and Sixsmith's.
Sixsmith is believed to have signed an agreement not to reveal the inner workings of the department. Consequently, we have Spin, laden with smut, controversy and, of course, politicians.
Although it couldn't literally depict Blair's government, being set in 2011, the anticipation of Spin's arrival is sure to put Whitehall into a bit of a tizz.