Here's a bit more information on Betty Swanwick:

She was the daughter of Henry Gerard Swanwick, born Ada Elizabeth Edith on 22/5/1915 in Colfe Road, Forest Hill. She attended Prendergast School and Goldsmiths College.

She also lived at 65 Hurstbourne Road 1920-1936, 5 Courtside, Dartmouth Road 1937-1941, 1 Park Hill, London Road 1942-1954 and 6 Halifax Street 1955-1959 when she moved to Greenwich and then to Tunbridge Wells, where she died in 1989.