[1] An art history graduate of the University of Warwick, Barnett worked for the BBC in London for 12 years.
[3] Carlos, a biopic of Carlos the Jackal by French director Olivier Assayas, was the first scripted original of Barnett's tenure; the rights were also desired by IFC, a channel under the same ownership, and a compromise was reached by CEO Josh Sapan for it to debut as a miniseries on Barnett's Sundance TV before being shown in full on IFC.
[4] As president and general manager at Sundance TV, Barnett developed programmes such as Rectify, Top of the Lake and The Honourable Woman.
While Rectify, about a man released from death row, did not attract large audiences, it was critically acclaimed; AMC Networks CEO Ed Carroll credited its success to Barnett's work with writer-director Ray McKinnon.
[4] The Walking Dead showrunner Angela Kang credited Barnett with supporting the series into its tenth season.