She named her 6 favorite secret agent novels for The Week magazine. One title on the list:
Our Man in Havana by Graham GreeneRead about another book on the list.
Insiders can portray spying as it is, exaggerate it, or laugh at it. Graham Greene chose to laugh cynically. Mr. Wormold, a vacuum-cleaner salesman in Havana, is recruited as an agent by British intelligence. He begins making up his intelligence. But when it all becomes true, he becomes a star. Then it all starts to unravel.
Our Man in Havana also made Alan Furst's five best list of spy books.
Also see Rimington's five best list of books about spies in Britain and a 2009 list of her six best books.
Read Rimington's answer to the question: Which fictional character most resembles you?