A provocative title to say the least, but it’s Foreign Policy‘s not ours:
The years after World War II were not kind to Britain’s intelligence services — especially MI5, its domestic counterintelligence and security agency. In the name of austerity, funding of the nation’s intelligence services was slashed, their emergency wartime powers removed, and their staff numbers drastically reduced. MI5′s ranks were reduced from 350 officers at its height in 1943, to just a hundred in 1946. Its administrative records reveal that it was forced to start buying cheaper ink and paper, and its officers were instructed to type reports on both sides of paper to save money. And there were some serious discussions within the government, as there had been after World War I, about shutting MI5 down altogether. Unfortunately for MI5, in the post-war years it faced the worst possible combination of circumstances: reduced resources, but increased responsibilities.