The Prime Minister
Who was the Prime Minister? Did he ever appear in the film, or did we just hear about him. No mention of a PM in the cast. ???
shareHe doesn't appear, and he isn't named either.
The same way with the President of the United States in "Veep", also by Armando Iannucci (he's never seen, and we only know his name in Season 4). His political party is also deliberately omitted. I think he's trying to make a point with this - it isn't about this or that politician or political party, it's about how politics works in general.