Acorn BBC Micro
A BBC Micro appears in the background of the Microplay TV show.

Stefan is a young computer programmer who is writing a game based on the choose your own adventure book Bandersnatch. His mental state deteriorates as the deadline for finishing the game approaches.
•Acorn BBC Micro •Commodore 64 •Tandy TRS-80 Model I •Toshiba HX-10 •Tandy TRS-80 Model III •Sinclair Research ZX Spectrum •Sinclair Research ZX Spectrum+ •Tatung Einstein 256
A BBC Micro appears in the background of the Microplay TV show.
A Commodore 64 appears in the background of the Microplay TV show. Stefan's colleagues at Tuckersoft also have 64s.
Stefan's colleague Colin has a TRS-80 on his desk at Tuckersoft and another appears in the TV show Microplay.
An HX-10 appears in the Tuckersoft offices.
Stefan's colleague Colin has a TRS-80 model III at home.
Stefan develops Bandersnatch on his Spectrum. Colin also develops games on another machine at Tuckersoft.
Stefan pitches Bandersnatch to Tuckersoft by running it on their Spectrum+. A Spectrum+ later also appears in a TV program about the success of the game.
An Einstein 256 appears in the TV show Microplay.