Shows like The Pembrokeshire Murders

If you want that blend of methodical procedural rigor applied to cold cases with atmospheric regional British settings, you're probably looking at Waking the Dead or Karen Pirie—both center a seasoned detective leading a specialized unit through decades-old murders using modern forensics, with similar pacing that lets evidence accumulate slowly before pressure mounts. Steeltown Murders will likely scratch the same itch if you specifically want Welsh cases and that contrast between outdated versus contemporary investigative methods, though it's more recent and compressed than Pembrokeshire's sprawl. If you prioritize the character-driven tension alongside the casework—that interplay between personal turmoil and procedural detail—Dublin Murders or Blue Murder might track better, even if they don't nail the exact regional specificity.