 
 <translate> The important part for answering this question is: The series takes place in an alternate 21st-century Britain.
Therefore, the answer is in an alternate 21st - century Britain. <ibo> Akụkụ dị mkpa maka ịza ajụjụ a bụ: Usoro ahụ na-ewere ọnọdụ na narị afọ nke 21 Britain. N'ihi ya, azịza ya dị na narị afọ nke 21 na Britain. 