In the early 1990s she presented talk-based magazine programme Afternoon Live for cable channel Wire TV. In 2000, she enjoyed a regular stint as one of the presenters of ITV1's daytime magazine show for women, Live Talk. She is currently both a presenter for BBC Radio Leeds, and a guest presenter for BBC Radio York.
From 1994 to 2005, Apanowicz was the partner of Countdown host Richard Whiteley. After his death, she published a biography of Whiteley titled Richard by Kathryn. Apanowicz donated three pairs of Whiteley's spectacles to optical charity Vision Aid Overseas (VAO), who sent them with a team of optical professionals to Ethiopia, where they were fitted to three locals with the same prescription. The BBC followed this story on their Inside Out programme which was broadcast on 19 September 2007.
Apanowicz became friends with Whiteley's Countdown co-host Carol Vorderman. In July 2008 Apanowicz made numerous appearances in the British media lambasting Channel 4 bosses for their refusal to negotiate an acceptable pay deal with Vorderman, which had resulted in her departure from the show.