On a gray afternoon in the Brecon Beacons, crews raised a camp of yurts on a windswept ridge to stand in for a Chinese village — a makeshift world built out of timber, fabric and ingenuity. The young sherlock cast worked in that same raw weather, with the cold Welsh winter proving a challenge for the production, Deon du Preez, the supervising locations manager, said as he described the effort to turn regional landscapes into Victorian-scale sets.
Young Sherlock Cast: who plays whom and what they bring
The series centers on Hero Fiennes Tiffin as the young Sherlock Holmes, with Max Irons playing his brother Mycroft. Dónal Finn appears as James Moriarty; Colin Firth is Sir Bucephalus Hodge, the dean of Oxford University; Joseph Fiennes is also part of the ensemble; Natascha McElhone portrays Holmes’ mother; and Zine Tseng is among the cast who travel with the story. The eight-episode drama was executive produced and directed by Guy Ritchie and is described as a re-imagined origin story for Sir Arthur Conan Doyle’s detective.
Cast members noted particular moments on set: Dónal Finn said one of his favorite days was filming in Oxford, where he and Hero were dressed as policemen, enjoying an early scene that helped shape the relationship between their characters. The production also frames its casting as a family affair, with Hero Fiennes Tiffin appearing alongside his uncle Joseph Fiennes.
How locations and logistics shaped the shoot
Filming took place across a patchwork of locations chosen to recreate 19th-century England and scenes abroad. Merthyr Mawr estate in Bridgend doubled as the Holmes family residence, Appleton Manor; the market town of Monmouth and Margam Park near Port Talbot were also used. The Bannau Brycheiniog provided a backdrop that was adapted into a Chinese village, where crews built a Yurt-style settlement; du Preez said that fighting the Welsh winter made that build particularly challenging.
The production also used Oxford — including a specific street identified as Merten Street — as well as sites in the south west of England, Bristol and Somerset. Outside the UK, scenes were shot in the south of Spain, which doubled for Paris and Constantinople. Du Preez highlighted the region’s stock of Victorian and period locations, calling it a rich and film-friendly palette of historic streets, civic buildings, heritage sites and country estates that allowed the series to approximate the scale needed while remaining mindful of budget constraints.
Style, reception and the show’s ambitions
Early critical response described the series as loud, brash and heavily stylized, with flashes of fun alongside a muscular, comic-book energy. Commenters noted that the production bears similarities to the director’s earlier take on the detective, and that the show leans into theatrical brawls, rapid-fire set pieces and stylized banter as part of its approach. At the same time, contributors to the series emphasized the care taken in production design and location work to evoke the pre-Victorian world the story inhabits.
The narrative itself spans multiple countries within the story world — England, France and Turkey — and follows a globe-trotting conspiracy that draws Holmes out of Oxford and into larger mysteries. Ritchie’s series adapts material from Andrew Lane’s Young Sherlock Holmes books and seeks to map an origin narrative onto an adventurous, franchise-ready aesthetic.
Behind the scenes, production responses focused on practical solutions: building a scaled village on moorland, selecting estates that could stand in for Appleton Manor, and using Spanish locations to represent continental cities. Du Preez framed these choices as both privilege and problem-solving, pointing to the team’s need to marry visual ambition with logistical limits.
Back on the windy ridge where the makeshift village still smells of sawdust, the young sherlock cast moved between takes, bundled against the cold. The constructed yurt village, once a technical answer to a storytelling need, now sits in memory as proof of the show’s gamble — a moment where geography, weather and a determined crew combined to bring a new chapter of Holmes to life.
