Amber Anderson, best known for starring in 2020’s Emma and Ciara Porter in JK Rowling’s Strike, will also be in the final season.
Peaky Blinders is also remaining tight-lipped about her character but director Anthony Byrne has already said a “dark” new female character would be introduced.
He told Digital Spy: “There’s a great female character who is new, who is pretty dark.
“I haven’t seen a character like her in Peaky before. I won’t say who she is, but she certainly gives Tommy a run for his money.”
Peaky Blinders is available to watch on BBC iPlayer.