Many people are under the delusion that Armando Iannucci based the character of Malcolm Tucker on Tony Blair’s spin doctor, Alistair Campbell. This is of course a vicious and unfounded falsehood. Minimal and shoddy investigations by the Science, Reason & Critical Thinking research department has uncovered that the character in question is in fact wholly based on Cardinal Tucker, a Papal Adviser based in the Vatican during the previous Papacy.
Despite the above being completely plucked from my arse. The following references may be of interest: