Born in London, Rollason studied to become a PE teacher before entering radio broadcasting in 1980. After directing sport related content for Channel 4, where she helped to bring American football to British television, she anchored coverage of the 1987 World Student Games and 1988 Summer Olympics. Her work on "Grandstand" proved popular with viewers, and led to a number of other sports presenting roles for Rollason throughout the 1990s. As well as covering mainstream events such as the 1996 Summer Olympics, she became a champion of disability sports, helping to raise its profile and change its public and media perception. She presented sports bulletins for "BBC Breakfast News" and BBC News, and in 1996 was named as Sports Presenter of the Year.