What is the author's style in The Honourable Schoolboy by John Le Carre?

The language of the novel is a precise English that includes some common slang and the special slang of the spy business. The British Secret Service calls their American counterparts the Cousins while they refer to themselves as the Circus. Money laundering is a gold seam. The newspaper is the comic. Haydon is a traitor who might have left behind a mole or a sleeper. Karla is the code name for the Russian who recruited Haydon.