[History] The Portland Spy Ring: Espionage During The Cold War

The Portland Spy Ring was a group of five spies working undercover in the UK and operating secretly with no diplomatic cover from the KGB and the USSR. However, the Portland Spy Ring passed the information they gained onto Soviet forces. So What? Remarkably, the Portland Spy Ring was able to operate for many years without detection. Whilst the exact number of documents shared by the Portland Spy Ring to Soviet forces remains unknown, MI5 now estimates that the Portland Spy Ring illicitly shared in excess of 350 highly sensitive naval documents with the KGB. Most think that the intelligence…