Barry Keoghan joins Cillian Murphy’s ‘Peaky Blinders’ movie — How did it take so long?!

Cillian Murphy and Barry Keoghan.
Cillian Murphy and Barry Keoghan.

He’s got a red right hand.

Barry Keoghan has joined the cast of the “Peaky Blinders” movie. The Irish actor, 31, is best known for his raunchy role in “Saltburn” and for his Oscar-nominated performance in “The Banshees of Inisherin.”

And, he’s also known for formerly being romantically linked with pop star Sabrina Carpenter.

The hit British gangster drama, which streams on Netflix, ended in 2022 after six seasons.

Earlier this summer, Netflix confirmed that series star, Oscar winner Cillian Murphy, would return for the movie, written by series creator Steven Knight.

Cillian Murphy as Tommy Shelby in “Peaky Blinders.” ?Netflix/Courtesy Everett Collection
Cillian Murphy as Tommy Shelby in “Peaky Blinders.” ?Netflix/Courtesy Everett Collection
Alyson Sandro and Barry Keoghan at the “Eternals” UK Premiere.<br> Samir Hussein/WireImage
Alyson Sandro and Barry Keoghan at the “Eternals” UK Premiere.
Samir Hussein/WireImage
Barry Keoghan at the 2024 Met Gala. Getty Images
Barry Keoghan at the 2024 Met Gala. Getty Images

The show follows Tommy Shelby (Murphy), a gangster in post World War I Birmingham, England.

The term “peaky blinders” refers to the caps, worn by the Shelby men, which have razor blades stitched into their brims — used to blind or maim enemies.

Many big stars have played Tommy’s allies or enemies in the show, including Tom Hardy, Sam Neil, “The Hunger Games” star Sam Claflin, and “House of the Dragon” star Paddy Considine.

Details of Keoghan’s role have not been announced.

Cillian Murphy in “Peaky Blinders.” Robert Viglasky
Cillian Murphy in “Peaky Blinders.” Robert Viglasky
Cillian Murphy as Tommy Shelby in “Peaky Blinders” Season 5. Courtesy Caryn Mandabach Productions
Cillian Murphy as Tommy Shelby in “Peaky Blinders” Season 5. Courtesy Caryn Mandabach Productions
Colin Farrell, left, and Barry Keoghan in “The Banshees of Inisherin.” AP
Colin Farrell, left, and Barry Keoghan in “The Banshees of Inisherin.” AP

“It’s nuts,” Murphy told The Post in 2018.

“I’m just constantly surprised how [‘Peaky Blinders’] continues to grow. Sometimes with these longform shows they tend to plateau, or dip, for a season, but ‘Peaky’ seems to have incrementally gotten stronger and I’m really proud of that. It’s a testament to [writer/creator] Steven Knight.”

The show boasts several celebrity fans, including Snoop Dogg, Brad Pitt, Tom Cruise and David Beckham.

Barry Keoghan in “Saltburn.” ?MGM/Courtesy Everett Collection
Barry Keoghan in “Saltburn.” ?MGM/Courtesy Everett Collection
Cillian Murphy in “Peaky Blinders.” ?Netflix/Courtesy Everett Collection
Cillian Murphy in “Peaky Blinders.” ?Netflix/Courtesy Everett Collection
Paul Anderson (Arthur Shelby), Cillian Murphy (Tommy Shelby) and Annabelle Wallis (Grace Burgess) in “Peaky Blinders” Season 3. Robert Viglasky
Paul Anderson (Arthur Shelby), Cillian Murphy (Tommy Shelby) and Annabelle Wallis (Grace Burgess) in “Peaky Blinders” Season 3. Robert Viglasky

“We get a lot of people who get in touch and want to take part,” Knight told the Guardian in 2019.

“There’s Brad Pitt. Snoop Dogg. A$AP Rocky, too. I think in Series 6 we will open the door a little to get some celebrity actors in. The main thing is they have to be good. We’ll just get the best actor for the part, as we did with Sam Claflin.”

“We watch ‘Peaky Blinders’ all the time—and dress like that every day,” Brooklyn Beckham said in 2019.

About the show’s popularity, Murphy told The Post that it caught on “like some sort of osmosis. When the second [season] came along it got into that zeitgeist-y kind of thing and by the third [season] people were walking around dressing as Peaky Blinders and getting the haircuts and listening to the [soundtrack] music.”

Barry Keoghan at the 81st Golden Globe Awards. CBS via Getty Images
Barry Keoghan at the 81st Golden Globe Awards. CBS via Getty Images
Cillian Murphy in “Peaky Blinders” Season 4. Robert Viglasky/Netflix
Cillian Murphy in “Peaky Blinders” Season 4. Robert Viglasky/Netflix
Barry Keoghan and Sabrina Carpenter at the 2024 Vanity Fair Oscar Party. WireImage for Vanity Fair
Barry Keoghan and Sabrina Carpenter at the 2024 Vanity Fair Oscar Party. WireImage for Vanity Fair

Murphy, who most recently won an Oscar for “Oppenheimer,” continued, “When people meet me in the public arena they’re terribly disappointed. I’m not moody and distant like Tommy … and I think people are genuinely underwhelmed when I’m such an unremarkable person in real life — but I’m quite happy about that.”

A premiere date for the movie has not been announced.