De term 'county lines' slaat op het misbruik van kwetsbare kinderen door hen als drugssmokkelaars in te zetten. Toni heeft het financieel niet breed om haar kinderen, de veertienjarige Tyler en diens zus, een degelijke opvoeding te bieden. Bovendien voelt Tyler zich op school een buitenstaander en wordt hij een gemakkelijke prooi voor de boef Simon die hem een baan als drugskoerier aanbiedt.
Nee, helaas is County Lines nog niet beschikbaar op Netflix in Nederland.
| Sound | Srdjan Kurpjel | Sound Effects Editor |
| Costume & Make-Up | Red Miller | Makeup Designer |
| Directing | Joe Starrs | First Assistant Director |
| Production | Sherylee Houssein | Location Manager |
| Costume & Make-Up | Sharon Long | Costume Designer |
| Production | Dylan Rees | Line Producer |
| Production | Aisha Bywaters | Casting Director |
| Camera | Richard O'Brien | First Assistant Camera |
| Camera | Ernest Tu | Second Assistant Camera |
| Camera | Charlie Cowper | Steadicam Operator |
| Production | Paul Harvey | Location Manager |
| Art | Ana Perez Bosque | Set Decoration |
| Costume & Make-Up | Red Miller | Hair Designer |
| Camera | Jimmy Mullins | Key Grip |
| Crew | Rob Lock | Fight Choreographer |
| Sound | Thomas Vertongen | Dialogue Editor |
| Costume & Make-Up | Jessie Hope-Weston | Makeup Supervisor |
| Sound | Doug Templeton | Boom Operator |
| Camera | Julian Fritz | Still Photographer |
| Directing | Penelope Berkemeier | Third Assistant Director |
| Directing | Daniela Brandano | Script Supervisor |
| Sound | Sean O'Shea | Sound Supervisor |
| Directing | Sam Waddington | Second Assistant Director |
| Camera | Phillip Brereton | Digital Imaging Technician |
| Editing | Phillip Brereton | Assistant Editor |
| Sound | Xavier Dujardin | Foley Mixer |
| Camera | Holly Lucas | Camera Trainee |
| Sound | Danny Richards | Boom Operator |
| Lighting | Ben Starkin | Gaffer |
| Production | Ceri Bedingfield | Casting Assistant |
| Lighting | Chris Barber | Rigging Gaffer |
| Art | Rosanna Bruce | Set Dresser |
| Costume & Make-Up | Anya Jane Magee | Assistant Costume Designer |
| Production | Andrew Georgiou | Production Accountant |
| Sound | Ben Baird | Sound Re-Recording Mixer |
| Sound | Ben Baird | Sound Designer |
| Camera | Joel Spence | Second Assistant Camera |
| Sound | Juan Montoto Ugarte | Production Sound Mixer |
| Crew | Vicki Milne-Price | Chaperone |
| Sound | Nick Kray | ADR Recordist |
| Visual Effects | Stuart Pitcher | Visual Effects Supervisor |
| Editing | Lauren De Rigny | Online Editor |
| Editing | Gareth Bishop | Colorist |
| Editing | Charlotte Llewelyn | Digital Intermediate Producer |
| Sound | Tapio Liukkonen | Foley Artist |
| Editing | Paco Sweetman | Editor |
| Writing | Henry Blake | Writer |
| Directing | Henry Blake | Director |
| Production | Zoe Bamber | Executive Producer |
| Production | Simona Hughes | Executive Producer |
| Production | Pia Getty | Executive Producer |
| Art | Phoebe Darling | Production Design |
| Camera | Sverre Sørdal | Director of Photography |
| Production | Victoria Bavister | Producer |
| Sound | James Pickering | Original Music Composer |
| Production | David Broder | Producer |
| Production | Christopher Granier-Deferre | Executive Producer |
| Production | Sherylee Anne Houssein | Location Manager |
