Secret Intelligence Service

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Related to Box 850: British Secret Service
  • noun

Synonyms for Secret Intelligence Service

the government agency in the United Kingdom that is responsible for internal security and counterintelligence overseas

References in periodicals archive ?
Please return all vouchers to: Mirror Voucher, PO Box 850, Milton Keynes, MK8 0HU.
Raven Maps & Images, Box 850, Medford, OR 97501; (800) 237-0798.
Hershey Medical Center, Pennsylvania State University College of Medicine, PO Box 850, Hershey, PA 17033.
Long, PO Box 850, Dighton, KS 67839; 620/397-2838, 800/747-7575, FAX: 620/397-2839 Web site: www.