Over the years, she became an expert in 19th-century military uniforms and often worked as an heraldic artist through the College of Arms. Anne died of liver cancer in Badingham, Suffolk on 25 May 1998 at the age of 69. She continued to work until two days before her death. At WorldCat, all catalogued works by Janet may be joint works with Anne. Meanwhile, those works catalogued as by Anne alone are not in the LC Catalogue.