Question: When was the British sitcom first broadcast on Channel 4 in which Margaret Alice Cabourn-Smith appears on?
Sentence (from "Margaret Cabourn-Smith"): Margaret Alice Cabourn-Smith (born July 25, 1975 in Richmond upon Thames) is an English comedy actress with appearances on "Catastrophe", "The IT Crowd", "Psychoville," "Peep Show" and "Fresh Meat".
Relevant evidence: Yes