Who were the middlemen behind the cocaine flooding Britain in the 1990s? From midnight yacht transfers in the Atlantic to cartel Narcos in Miami, and US agents piecing together the network supplying Brian Brendan Wright.

Credits Presenter: Livvy Haydock Series Producer: Louise Clarke Producer: Patrick Kiteley Journalism Assistants: Tim Fernley and Hattie Valentine Technical producer and sound designer: Nicky Edwards Commissioning Editor: Louise Kattenhorn Commissioning Producer: Sam Proffitt Editor and Executive Producer: Tara McDermott

Acknowledgements Luis Navia is the co-author, with Jesse Fink, of Pure Narco: One Man’s True Story of 25 Years Inside the Colombian and Mexican Cartels.