 During 1910–11, Walls toured in Australia, playing Peter Doody in "The Arcadians", Mr. Hook in "Miss Hook of Holland", and the Marquis de St. Gautier in "The Belle of Brittany".Back in London, Walls had substantial roles in "The Sunshine Girl" (1912); "The Marriage Market" (1913) and "A Country Girl" (1915).Later in 1915 he played Coquenard in a revival of Messager's "Veronique"; between then and 1921 he appeared in nine other musical comedies and a pantomime.