MK Ultra (related to mind control, not directly British)

Project MKUltra was a secret CIA program during the 1950s and 1960s that researched mind control techniques. It involved experiments with drugs like LSD, hypnosis, and other methods to influence or manipulate individuals’ thoughts, behaviors, and memories—often without their consent. The goal was to develop interrogation techniques and potential ways to control enemies’ minds during the Cold War. The program’s detailed activities were kept hidden, and its exposure in the 1970s led to widespread controversy and reforms. MKUltra remains a notable example of government efforts to understand and potentially wield psychological control.