The gang attracts the attention of Inspector Chester Campbell (played by Sam Neill) with their latest robbery and is sent to Birmingham by the then Foreign Secretary Winston Churchill to investigate this robbery. Its targets are gangs, gangsters, communists and common criminals. Chester vows to cleanse the city of these illegal organizations, and then he brings his own team from Belfast, where he previously served, and starts working.[7][8] Winston Churchill is portrayed by Andy Nyman in the first series and by Richard McCabe in the second series.

The second series takes place two years after the first series. The Shelby family considers itself to have expanded its own criminal organization in the "North and South London" area.[9] The second series begins in 1921 and ends with the Epsom Derby in June 1922.

The third series takes place two years later and starts in 1924. Tommy and his family enter a more dangerous world and expand the organization even further, but this time the expansion is international. According to the Internet-based film and television news company Screen Rant, "The season revolves around the concepts of social classes and empire. He sorts these situations by surprising, although they are predictable."

As it can be understood, the series tells about the deterioration of empires that have grown over time, become complex, and collapse by not being able to maintain them in this way. The season has taught Tommy how to expand when swimming in polluted waters and how to pay attention to other sharks – especially those who have a great influence on the government. Peaky Blinders mainly tells the story of a fish that moves quickly outside its own comfort zone and expands too much in a risky way. There are some times, the risk is paid in advance."[10] `Paddy Considine as Father John Hughes, Alexander Siddig as Ruben Oliver, Gaite Jansen as Grand Duchess Tatiana Petrovna and Kate Phillips as Linda Shelby - Arthur's wife - are some of the cast members added in the third season.

In the fourth season of the series, Oscar-winning famous actor Adrien Brody portrayed the role of Luca Changretta, while in the fifth season, broadcast in 2019, Sam Claflin gave life to British politician Oswald Mosley.