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 |
| Production | Dylan Rees | Line Producer |
| Costume & Make-Up | Sharon Long | Costume Designer |
| Production | Ceri Bedingfield | Casting Assistant |
| Production | Sherylee Houssein | Location Manager |
| Production | Paul Harvey | Location Manager |
| Camera | Charlie Cowper | Steadicam Operator |
| Production | Aisha Bywaters | Casting Director |
| Camera | Richard O'Brien | First Assistant Camera |
| Sound | Ben Baird | Sound Designer |
| Camera | Joel Spence | Second Assistant Camera |
| Directing | Penelope Berkemeier | Third Assistant Director |
| Costume & Make-Up | Red Miller | Makeup Designer |
| Costume & Make-Up | Red Miller | Hair Designer |
| Directing | Sam Waddington | Second Assistant Director |
| Directing | Daniela Brandano | Script Supervisor |
| Directing | Joe Starrs | First Assistant Director |
| Camera | Jimmy Mullins | Key Grip |
| Editing | Phillip Brereton | Assistant Editor |
| Lighting | Chris Barber | Rigging Gaffer |
| Sound | Ben Baird | Sound Re-Recording Mixer |
| Visual Effects | Stuart Pitcher | Visual Effects Supervisor |
| Costume & Make-Up | Anya Jane Magee | Assistant Costume Designer |
| Production | Andrew Georgiou | Production Accountant |
| Sound | Juan Montoto Ugarte | Production Sound Mixer |
| Crew | Vicki Milne-Price | Chaperone |
| Sound | Xavier Dujardin | Foley Mixer |
| Camera | Ernest Tu | Second Assistant Camera |
| Camera | Holly Lucas | Camera Trainee |
| Sound | Thomas Vertongen | Dialogue Editor |
| Camera | Phillip Brereton | Digital Imaging Technician |
| Art | Rosanna Bruce | Set Dresser |
| Sound | Doug Templeton | Boom Operator |
| Costume & Make-Up | Jessie Hope-Weston | Makeup Supervisor |
| Crew | Rob Lock | Fight Choreographer |
| Sound | Danny Richards | Boom Operator |
| Lighting | Ben Starkin | Gaffer |
| Camera | Julian Fritz | Still Photographer |
| Art | Ana Perez Bosque | Set Decoration |
| Sound | Sean O'Shea | Sound Supervisor |
| Sound | Nick Kray | ADR Recordist |
| Editing | Charlotte Llewelyn | Digital Intermediate Producer |
| Editing | Gareth Bishop | Colorist |
| Editing | Lauren De Rigny | Online Editor |
| Sound | Tapio Liukkonen | Foley Artist |
| Directing | Henry Blake | Director |
| Writing | Henry Blake | Writer |
| Editing | Paco Sweetman | Editor |
| Production | Simona Hughes | Executive Producer |
| Production | David Broder | Producer |
| Production | Christopher Granier-Deferre | Executive Producer |
| Sound | James Pickering | Original Music Composer |
| Production | Pia Getty | Executive Producer |
| Art | Phoebe Darling | Production Design |
| Production | Zoe Bamber | Executive Producer |
| Camera | Sverre Sørdal | Director of Photography |
| Production | Victoria Bavister | Producer |
