After training at Manchester School of Art and Hornsey School of Art, Sonia Robinson lived in Hampstead where she worked as a freelance artist specialising in mural painting. In the 1970s, she moved to Mousehole in Cornwall, and since then she has painted mainly marine subjects and buildings.

Sonia is a member of the Royal Society of Marine Artists (RSMA) The Society of Women Artists (SWA) and the Newlyn Society of Artists. Her work is regularly included in the RSMA, RI, and Singer and Friedlander exhibitions at the Mall Galleries and in various shows at the Westminster Galleries. Other exhibition venues have included Lincoln Joyce Fine Art in Great Bookham; Kendall's in the Isle of Wight, Royal Fine Art in Tunbridge Wells; St Barke Gallery and Museum in Lymington, The Wonderwall Gallery in Cirencester, The Little Picture Gallery in Mousehole, Falmouth Art Centre, Newlyn Art Gallery, and the Bruton Street Gallery in London. As well as three solo shows at the Mariners Gallery in St Ives, Sonia has had a solo exhibition at the Coach House Gallery in Guernsey, and her work has also been exhibited in France, Australia and Holland. Her paintings are included in two books - "A celebration of Marine Art and Marine Paintings" by James Taylor, and she was the winner of the Donald Blake Award, 2000 awarded by Lincoln Joyce Fine Art. Sonia was also the Chairman of the St Ives Society of Artists during the eighties and early nineties.