1. 
   MI6
   British security service, otherwise known as the Secret Intelligence Service, responsible for collecting foreign intelligence relating to national security
   Found op http://www.secondworldwar.co.uk/glossm.html
   
   
2. 
   MI6
   Abbreviation for Military Intelligence, section six, the secret intelligence agency of the British intelligence services which operates largely under Foreign Office control. MI6...
   Found op http://www.encyclo.co.uk/local/20688
   
   
3. 
   MI6
   Military Intelligence 6 - Covername of SIS
   Found op http://www.psywar.co.uk/glossary.php
   
   
4. 
   MI6
   Commonly used but unofficial title for SIS dating back to before WWII.
   Found op https://www.sis.gov.uk/glossary.html
   
   
5. 
   MI6
   British government agency responsible for the collection, analysis, and appropriate dissemination of foreign intelligence. MI6 is also charged with ... [1 related articles]
   Found op http://www.britannica.com/eb/a-z/m/83
   
   
6. 
   Mi6
   MI6 is the British Secret Intelligence Service (formerly section 6 of Military Intelligence). It is a civilian organisation with functions resembling those of the American CIA. It is charged with gathering information overseas and other strategic services.
   Found op http://www.probertencyclopaedia.com/browse/FM.HTM
   
   
7. 
   MI6
   Abbreviation for Military Intelligence, section six, the secret intelligence agency of the British intelligence services which operates largely under Foreign Office control
   Found op http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0045586.html
   
   

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