security service

1. 1.

   the government agency in the United Kingdom that is responsible for internal security and counterintelligence on British territory

   SynonymsMIMilitary Intelligence Section 5

   Broaderinternational intelligence agency

   United Kingdom

Questions about security service

What does security service mean?

security service means "the government agency in the United Kingdom that is responsible for internal security and counterintelligence on British territory".

What is another word for security service?

Close synonyms include MI, Military Intelligence Section 5. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.