 The Lucy Kemp-Welch estate has been represented by Messum's Fine Art since 1975.Her younger sister Edith, who died in 1941, was also an artist as was her cousin Margaret Kemp-Welch (1874–1968).Like her sister, Edith Kemp-Welch also produced a poster for the British war effort, an image of Britannia with the slogan "Remember Scarborough."