<P> This was the first episode of Black Mirror directed by a woman, Jodie Foster . Foster was in control of casting the episode leading to the casting of her friend Rosemarie DeWitt as Marie, as the pair had met through Foster's wife Alexandra Hedison; this was only the second time Foster had worked with a friend as a director, after Mel Gibson in 2011 film The Beaver . According to Brooker, Foster was chosen for the episode because as a former child actor, she would understand what it was like to grow up in the spotlight, as well as how to deal with the child actors during filming . Netflix had also recommended Foster to Brooker, since she had previously directed episodes of their series Orange is the New Black and House of Cards; she provided a good amount of "grounded" feedback on the script prior to shooting, according to Brooker . Foster also flew to London to help with the episode's editing alongside Brooker . </P> <P> Written by Charlie Brooker, the episode is intended to be sympathetic to helicopter parenting; Brooker took inspiration in how he "(felt) reprogrammed" following the birth of his children that made him more protective . Annabel Jones, co-producer for the series, said that the idea of Arkangel came from microchip implants used to identify pets that, at the time of writing, were also being considered for children . Jones said, "We wanted to think what the updated version of that (was) and find a really good idea of how that could go terribly wrong". The original script gave Marie's father only a very minor part, but this was fleshed out by Foster . Foster also influenced other changes in the script, and offered many observations on the technology used and Marie's motivation for her actions after seeing her daughter have sex with Trick . </P> <P> Filming took place in Toronto over three weeks in November 2016, starting just around the 2016 United States presidential election . Foster states that the filming involved "very long hours" and that the scenes starring children were particularly troublesome . Displaying graphic content was avoided in the episode, with Foster believing it would "distract from what the meaning was". An exception was the scene where Sara attacks her mother . Brooker notes that in this scene, more whacks were filmed than made it into the episode, though enough were needed for the viewer to understand Sara's perspective, and render Marie unconscious . The final shot of the episode, where Marie frantically tries to use the tablet shouting "No!" repeatedly, was filmed the day after the election results were in; DeWitt injected her personal reaction at the results into the scene . </P> <P> Explaining the actions of her character Marie, DeWitt says in an interview that single mothers "experience betrayal differently"; Foster adds that when Marie realises Sara is lying to her, but does not confront her, it causes a "fissure" and Marie begins "fighting a battle to win control". By attempting to prevent her daughter from leaving her, Marie is victim to a self - fulfilling prophecy as she "engendered the exact result that she most feared". </P>

Where was the arkangel episode of black mirror filmed