Antony Thomas was making documentary films at a time in film and TV when leading producers and executives were backed by their organizations, could stand by their principles and get films made. Three very different commissioners – Charles Denton, Sheila Nevins and Tony Essex – gave him a free rein to make defining, bold films. They were not dominated by the obsession with ratings and chasing “subscriber loyalty”, or hampered by lawyers making risk-averse decisions to protect the brand, as is the case for factual entertainment today.