A poster for The Michael Callow Years appears in the Historik office, which appears to be a documentary about the prime ministership of Michael Callow from The National Anthem (2011).
A 'Loch Henry' poster for the documentary created is visible on Streamberry when Joan Tait is browsing before spotting Joan Is Awful in Joan Is Awful (2023).
(At 23:33) Davis's laptop shows a 'Waldo' sticker from The Waldo Moment (2013) and a 1980s 'Tuckersoft' logo sticker from Black Mirror: Bandersnatch (2018).
This is Monica Dolan's second Black Mirror episode, the first being the season 5 episode Smithereen.