SIS : The official website of the British Secret Intelligence ServiceWe work overseas to help make the uk a safer and more prosperous place. SIS (MI6) AT A GLANCE WATCH VIDEO We are SIS – the UK’s Secret Intelligence Service - also known as MI6. Our people work secretly around the world to make the UK safer and more prosperous. For over 100 years SIS has ensured the UK and our allies keep one step ahead of our adversaries. We are creative and determined - using cut
