Hann presented BBC's Tomorrow's World between 1974 and 1994. She has since made guest appearances on various TV shows, and has done some TV commercials. In 1997 she appeared in a Shredded Wheat advertisement in which she used her scientific judgement to inform viewers that the product could possibly help keep their hearts healthy. In 2006 she presented a programme on BBC Radio 4,Two's A Crowd. She runs her own media training and presentation skills company with her husband John Exelby.
Judith Hann lives on a farm near a small town called Lechlade, in the Cotswolds. She is married to John Exelby, a former executive at BBC News, and has two sons; Jake and Daniel Exelby. She is passionate about herbs and has a very large garden.