 Blackmore also served on the Society's Executive Committee and wrote articles for the Society's journal concerning stagecraft in general and his career with the D'Oyly Carte Opera Company.Blackmore made his last public appearance by reprising his role as Sir Bailey Barre in The Gilbert and Sullivan Society's concert version of "Utopia, Limited" on 29 April 1939, forty-six years after originating the role at the Savoy Theatre.His wife predeceased him in 1939; they had no children.