Mount Caburn, Lewes, East Sussex, United Kingdom. This is a very common rose for a few hectares in this location but very rare else where in the U.K. 15/6/17
"From "Roses in Colour and Cultivation", by T. C. Mansfield, 1947, facing p.66: Rosa pineliensis (top left), Rosa agrestis (center), Rosa blanda var. hispida (right).