The Irregulars: Every Star Slated For a Role in Netflix's Sherlock Holmesian Drama

Graham is set to star as Bea, the leader of the Irregulars. Graham has been steadily raising her profile over the past few years, with starring roles on the British action drama Curfew and the miniseries Us. You also may recognize her from Netflix's The Letter for the King, where she played Iona.

Shaw will be playing Jessie, Bea's younger sister and another of the Irregulars. The English actress appeared on the crime drama The Bay, but her biggest claim to fame so far came in 2019, when she played a young Judy Garland in the biopic Judy.

Macari, who will be playing Irregular member Billy, is probably best known for his work on a pair of TV shows. He appeared as Prince Henry in the third season of Harlots, and he joined the cast of Sex Education as Kyle in season two. More recently, he played Mogwan in two episodes of the Netflix fantasy drama Cursed.

David has been appearing in smaller roles for the past decade, but his role as Irregular member Spike will be his first major TV series regular role. Prior to this, he's pretty much stuck to British TV, including an arc on Holby City and, more recently, Casualty.

Osterfield, who rounds out the Irregulars group as Leopold, is a model-turned-actor with an unexpected link to one of the world's biggest movie franchises. After working as Tom Holland's personal assistant, Osterfield got uncredited cameos as a student in both Spider-Man: Homecoming and Avengers: Infinity War. He also had a minor role in the Hulu miniseries adaptation of Catch-22.

Lloyd-Huges is taking on the iconic role of Sherlock Holmes, so it seems fitting that he got his first movie role in an iconic franchise too. He appeared in the minor role of Hogwarts student Roger Davies in Harry Potter and the Goblet of Fire back in 2005, and since then, he's been working steadily in everything from British TV to major motion pictures. His movie credits include Anna Karenina, Madame Bovary, and Now You See Me 2, while his TV resume includes historical dramas like Les Miserables and Indian Summers. Most recently, he played Aaron Peel on the second season of Killing Eve.

Pierreson is set to play a new, darker version of Dr. Watson. So far, he's built a steady career alternating between TV and movies, including several British dramas. He also appeared in Netflix's The Witcher as Istredd, and he has something in common with one of his co-stars: like Darci Shaw, he had a role in the film Judy.

Peters, whose character has the eerie and intriguing name "The Linen Man," is something of a TV drama staple. He's worked with David Simon on acclaimed HBO dramas twice, playing detective Lester Freamon on The Wire and Albert "Big Chief" Lambreaux on Treme. You also may recognize him from playing the Master of Jordan College in season one of His Dark Materials. Peters also has worked in some top-notch films over his decades-long career; recent credits include Three Billboards Outside Ebbing, Missouri and Da 5 Bloods