<Tr> <Th> Featured music </Th> <Td> Original Score by Atticus Ross Leopold Ross Claudia Sarne </Td> </Tr> <Tr> <Th> Original air date </Th> <Td> 29 December 2017 (2017 - 12 - 29) </Td> </Tr> <Tr> <Th> Running time </Th> <Td> 59 minutes </Td> </Tr> <Tr> <Th_colspan="2"> Guest appearance (s) </Th> </Tr>

Where was episode 3 season 4 black mirror filmed