The Secret War Between the Wars: MI5 in the 1920s and 1930s

The methods developed by British intelligence in the early twentieth century continue to resonate today. Much like now, the intelligence activity of the British in the pre-Second World War era focused on immediate threats posed bysubversive, clandestine networks against a backdrop of shifting great power politics. Even though the First World War had ended, the battle against Britain's enemies continued unabated during the period of the 1920s and 1930s. Buffeted by political interference and ofte