All current seasons (Seasons 1–4) include official Hungarian subtitles and, in many cases, Hungarian dubbing as well.

Lamb paused, a spark of something—not quite interest, but perhaps a higher level of boredom—flickering in his yellowed eyes. "Peckham? No one goes to Peckham for paperclips. They go there to get stabbed or to buy knock-off VCRs."

Across the room, Jackson Lamb’s office door creaked open. The smell of cheap cigarettes and even cheaper gin drifted out like a physical entity.

If you are looking for fan-made translations for other versions, sites like Hosszupuskasub or Feliratok.info are the go-to communities for Hungarian SRT files. 2. A Short Story: The Slough House Shadow

River grabbed his coat, the familiar weight of Slough House pressing on his shoulders. It was a lead. A tiny, metallic, silver lead. In the world of the Slow Horses, that was practically a promotion.

Since you mentioned "write a story" alongside Slow Horses , here is a brief piece of fiction inspired by the show’s grimy, espionage-failure aesthetic.

"Cartwright," Lamb barked, scratching his belly through a shirt that had seen better decades. "Why are you staring at that spreadsheet like it’s going to tell you the meaning of life? It’s a list of wire fasteners. Your life is wire fasteners now. Accept it."

"I found a discrepancy," River said, trying to maintain a shred of dignity. "Four thousand clips went to a warehouse in Peckham that doesn't exist."