A highly experienced executive and program-maker, Alan serves as head of Plimsoll USA where he is responsible for expanding the company’s US footprint and serves as chief point of contact for all of Plimsoll’s US-based business.

With dozens of unscripted television and film credits to his name, he spent the last decade as a commissioner for the National Geographic Global Channels, where he oversaw more than 300 unscripted hours a year of series, formats and documentary films created in tandem with some of the world’s greatest storytellers including Darren Aronofsky, James Cameron, as well as Oscar winning documentary filmmakers such as Jimmy Chin and Chai Vasarheyli, TJ Martin and Dan Lindsey and Brett Morgen.

His credits include non-fiction blockbusters for Disney+, including Limitless with Chris Hemsworth, Will Smith’s Welcome to Earth, the Emmy-nominated series The World According to Jeff Goldblum and Beyond Belief with David Blaine. He’s also responsible for long-running series, including mutli-Emmy winning Life Below Zero, Gordon Ramsey: Uncharted, Brain Games, Running Wild with Bear Grylls and Trafficked with Mariana Van Zeller.  He was a key team member in the launch of National Geographic Documentary Films, responsible for developing a premium slate for theatrical release, festival circuits and television distribution. Credits include the Emmy-winning LA 92; the Academy Award-nominated and Emmy-winning The Cave; the Critics’ Choice winner and BAFTA Film Award nominee The Rescue; and the Academy and Emmy-winning global phenomenon Free Solo.

Grant Mansfield

CEO & Founder

Jonathan Jackson

Chief Operating Officer & Chief Financial Officer

Martha Holmes

Chief Creative Officer, Natural History & Science

Karen Plumb

Head of Factual Entertainment

Mark Brownlow

Creative Director, Natural History

James Smith

Head of Adventure

Marvin Rees

Non-executive Director & Mayor of Bristol

Richard Klein

Head of Documentaries UK & International

Kate Beetham

Executive Producer

Andrea Jackson

Creative Director, Factual Entertainment

Lucy Bilson

Head of Production

Will Brown

Head of Operations & HR

Becky Morrison

Head of Development

Ged Mansfield

Creative Director, Development