In 1952 London experienced the Great Smog. Around 4,000 people died and 100,000 became sick. It was this that led Parliament to pass the Clean Air Act of 1956 which paved the way to cleaner air and was an important milestone in the protection of the environment.

But what if the Act was never passed? What if a young and unscrupulous politician and businessman had blocked its passing? Meet George Weeks ...

A cautionary tale of a world that might of been.