Digital television

UNIT's Sgt Catherine Petts, not exactly taking the alien contact that had been reached seriously following the disappearance of Guinevere One, she mentioned that they had a "TV channel", and that it was on "terrestrial, digital, cable, satellite, swanky mobile phones, and even behind the bloody red button." (PROSE: Guinevere One)

Behind the scenes
Only the medium type is mentioned; the "television" part was omitted in PROSE: Guinevere One.