Ros Williams was born in Oldbury, Worcestershire, the fourth child (of 5) of Arthur and Rosaline (nee Neale) Williams. She dropped out of a degree course in librarianship to study art at Bournville School of Art, Birmingham from 1981-3, before moving to Cornwall where she graduated from Falmouth School of Art with a BA Hons Fine Art in Printmaking (1986). The following year she worked for the Cornwall Trust for Nature Conservation, the nature painter Andrew WADDINGTON being one of her co-workers.

She began to show her work in group shows in the UK and abroad, living on a boat on the coast of Cornwall from 1988-1995, and sharing studios with painters Judy ANDERSON and Stephanie BOON.  Ros's children were born in Cornwall and home educated.

In 1997 she moved to the Isle of Wight, and was active with the Steve Ross Foundation for the Arts, teaching non-toxic printmaking and book arts to adults and children. She initiated Open Access Printmaking.  By 2008 she had returned to Cornwall, working from Krowji, The Old Grammar School, Redruth and in Penwith.  She received Arts Council Awards for her work in 2004 and in 2008.

In 2012 she is partnering the artist Peter FOX in creating a 'pop up' gallery, currently located at Trevelyan House, 16 Chapel Street, Penzance, where they are showing their own work and the artwork of associates, and holding bookarts workshops for pupils of all ages.  Together with the Hypatia Trust they will provide temporary exhibition space for artists who specialise in 'outsider art' and who may find difficulty in taking space in the relatively closed circle of contemporary and public galleries. The gallery will have an on-line presence as well, and may 'pop-up' near you at any time.