Amazon Signs Channel 4 Commissioner Channel 4 documentaries commissioner Fozia Khan has joined Amazon Prime Video unscripted team in the UK. She will report to head of unscripted Dan Grabiner, who is responsible for shows including All or Nothing: Tottenham Hotspur. Khan will join Amazon in the summer and news of her departure follows a commissioning restructure at Channel 4. Her appointment was first reported by UK trade Broadcast.