"U.N.C.L.E." stands for United Network Command for Law Enforcement. In the original NBC television classic series, this group fought the evil of T.H.R.U.S.H., which stood for Technological Hierarchy for the Removal of Undesirables and the Subjugation of Humanity. Robert Vaughn starred as Napoleon Solo and David McCallum as Illya Kuryakin.
In the film, Cavill will play Solo and Hammer will play Kuryakin, although it should be noted that names might change as the movie story will most likely be updated with the times.
Grant will be playing the head of the British Naval Intelligence. Grant's last films were "Cloud Atlas" and " The Pirates! Band of Misfits". He is currently filming an untitled comedy project being directed by Marc Lawrence.