Robertson was an MA student at Chelsea School of Art in 1980 when she first met fellow artist Trevor Sutton, then a Senior Lecturer in Painting at Chelsea. They married in 1985 and live and work in London. Both are abstract artists but each has distinctly different aesthetic sensibilities. They travel extensively together and have actively sought artist residencies that take them away from the urban intensity of London to more remote locations. French Paintings is a response to a series of residencies in the Midi-Pyrenees region.
In 2013 Sutton made a book titled Trevor Sutton - Irish Paintings based on over a decade of residencies at the Ballinglen Arts Foundation in County Mayo, on the north west coast of Ireland. Irish Paintings and French Paintings apply the same concept of relating location and environment with the formal language of geometric abstraction.