This may have come up before, if so please excuse me. While in the UK I caught up with a couple of episodes from the latest season[4th series]--brilliant
Here's a rundown from Wiki
Peaky Blinders is a British television crime drama based upon the exploits of the Peaky Blinders gang, and is set in Birmingham, England in the aftermath of World War I. The series, created by Steven Knight and produced by Caryn Mandabach Productions and Tiger Aspect Productions, centres on stars Cillian Murphy as Tommy Shelby, the gang's leader, and Sam Neill as Chester Campbell, a commissioned detective tasked with suppressing the gang.[1]
The first series aired on BBC Two on 13 September 2013 and ran for six episodes. The second series premiered on 2 October 2014. The third series premiered on 5 May 2016. On 26 May 2016, the BBC announced they had ordered a fourth and fifth series of the show.[2][3] The fourth series premiered on 15 November 2017; after the series finale broadcast on 20 December 2017, it was announced that series 5 will be shown in 2019.[4]