Britain’s Secret Intelligence Service: A Legacy of Espionage Excellence
The iconic SIS Building seen from Vayxhill Bridge. The SIS Building (or MI6 Building) houses the headquarters of the British Secret Intelligence Service (SIS / MI6), Photo by Laurie Nevay / CC BY_SA 2.0. The Secret Intelligence Service (SIS), better known as MI6, stands as one of the most iconic and effective intelligence agencies in the world.…