Not particularly, I don't think. It's one of those things that you either know, or you don't. Philby was a British MI6 officer who turned out to have been spying for the KGB. He was exposed in 1966 and defected to the Soviet Union, where he lived until his death in 1988. So he wasn't recent news in 2002, or anything.
His given name was Harold. He was nicknamed "Kim" after the hero of Kipling's spy novel of the same name.
I've watched documentaries and read books about this plus there was a mini-series called "The Cambridge Spies" in 2003