In "The History of Numberwang" sketch, the sequence given to the computer is 4 8 15 162 3420. This is a reference to "The Numbers" features in Lost (2004) 4 8 15 16 23 42 which make numerous appearances throughout the show.
The Angel Summoner's Staff is Saruman's Staff painted white with some feathers stuck on it.
As of 2021, two cast members of the show - Olivia Colman and Daniel Kaluuya - have won acting Oscars.
The background music for the "Inebriati" sketch is taken from the soundtrack of Stanley Kubrick's The Shining (1980).
The music used for the intro is a heavily edited version of "Alive And Amplified" by The Mooney Suzuki. For the radio series, it is Acker Bilk's "Stranger on the Shore".