When Spencer tells his agent he had a swift drink after the awards ceremony "with Eddie", he means Eddie Izzard. The writers thought it would be funny to have Spencer as one of the comedian's friends.
The writers admitted that the idea of a hit show having a poorly received ending was partly inspired by Game of Thrones, and Reece Shearsmith also said The Sopranos was also an inspiration. He added he has never actually seen The Sopranos.
The musical motif used throughout this episode is from "The Model" by Kraftwerk.