Slow Horses Codexery

An unofficial illustrated fan codex of Slow Horses — its characters, world, story, powers, and lore.

Characters

Diana Taverner · River Cartwright

World & Setting

London

Story & Timeline

Slow Horses Novel · Season Two Arc · River Cartwright's Slough recruitment · The Slough House as institutional setting · MI5 internal politics and hierarchy · Season 1 Pilot episode · Jackson Lamb's Slough House leadership · Slough House culture and motto

Factions & Groups

MI5 · CIA · MI5 (The Security Service)

Lore & History

Slough House · Mick Herron

Behind the Scenes

Apple TV+ · Jack Lowden · Gary Oldman · Kristin Scott Thomas

Frequently asked questions · How this site is sourced