MI5

commonly known as MI5 utawa Basa Inggris: Security Service (Intèlijen Militèr sèksi 5), iku badan kaamanan lan kontra intèlijen Inggris minangka péranganing mesin intèlijen bebarengan karo Secret Intelligence Service (SIS utawa MI6), Government Communications Headquarters (GCHQ) lan Defence Intelligence Staff (DIS). Kabèh mau ana ing sangisoré arahan Joint Intelligence Committee (JIC). Rujukan Wacan Andrew, Christopher (2009). The Defence of the Realm: The Authorised History of MI5. Allen Lane. ISBN 1846142849. Published in the USA on November 2009 by Knopf as Defend the Realm. The Authorised History of MI5. ISBN 978-0-307-26363-6. Pranala njaba Security Service Records of the Security Service on The National Archives' website. UK Intelligence Community On Line