UK security services

In the United Kingdom, the umbrella term security services refers to the UK government agencies collectively responsible for espionage, counterespionage, counterterrorism and other covert activities.

This typically means:

• Security Service, more commonly known as MI5
• Secret Intelligence Service (SIS), more commonly known as MI6

Some people also count Special Branch and the Metropolitan Police Anti-Terrorist Branch as part of the security services.


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