The 41-year-old actor said the spontaneity of the show, that followed the everyday life of a small air crew, was what kept him and his co-stars on their toes, reported DigitalSpy.
"It was really good fun. I miss it. We'd come in on the day - it was all a day's work, the whole thing - we'd probably get the script a week before but I don't think, other than Roger Allam (co-star), any of us had really ever read it properly until we were all sat round the table together. And it was such good fun, really good fun," Cumberbatch said.
The show also starred Stephanie Cole and John Finnemore, who was its writer-creator.