Daisy Ridley made a very small guest appearance in season 1 in Vanity Project (2013). According to Matt Berry, he wanted to bring her back on the show, but couldn't get in touch with her. It later turned out that she had been cast in Star Wars - Il risveglio della Forza (2015) recently, which made her unavailable. Berry remarked "We couldn't really compete with Daisy being in Star Wars". Additionally, in season 3 at the very end of Hamm on Toast (2015), Toast and Ed see an article in the newspaper regarding a completely unknown actress, Pookie Hook, with no stage or screen experience that landed a lead role in a Star Wars film. She mentions that she was a great fan of Steven Toast, and Ed suggests that Steven could give her some acting lessons to which Steven says maybe he could.
In the final episode of the third series of What We Do In The Shadows, Laszlo (played by Matt Berry) can be heard playing the theme of Toast of London on the piano.
The running gag at the beginning of each episode where Steven Toast constantly does voiceover work, sometimes with numerous bizarre requests for the recording takes to be done over and over again, is based on some of the stories British actor and voice artist Peter Serafinowicz has told of his experiences of working in that field.
After the episode shown on the UK's channel 4 on the 9/12/15 Matt Berry and the Maypoles performed the theme song live.
Matt Berry based Steven Toast on several individuals he befriended in the film industry.