I use and love many Judith Williams products, especially the body butters. Enjoyed the first of her mini-series yesterday and as I am quite intrigued by her interesting background, did a little Googling, and found this clip of a charity concert organised by her husband (I think!). You can hear Judith singing from 0:51 seconds - a rather fine voice:
http://alexander-klaus-stecher.de/charity.html
http://alexander-klaus-stecher.de/charity.html