[1] After working as a sports reporter and anchor for CHCH-TV and CBET-TV,[2] Prestedge joined the national CBC Television in 1983, and was part of the network's team covering the 1984 Summer Olympics.
In 1986, she served as a substitute anchor for several weeks on the network's noon-hour news program Midday, when Valerie Pringle was away on maternity leave;[5] she also served a stint as host of Ontario Morning, CBC Radio's local morning program for non-metropolitan markets in Southern Ontario, in the early 1990s.
[6] Prestedge subsequently became director of the broadcast journalism program at Mohawk College in Hamilton, Ontario.
[7] In 2001, she was named senior vice president of WTSN, the world's first television channel devoted exclusively to women's sports.
[1] The channel ceased operations in 2003, and Prestedge rejoined the CBC in a management role;[8] in this capacity, she sometimes served as anchor of the network's abbreviated newscasts during its 2005 labour dispute.