 He filled in for Fancourt from time to time as Mountararat, Colonel Calverley, and the Mikado, and he also occasionally played Grosvenor in "Patience".The Gilbert and Sullivan historian Colin Prestige wrote of him, "Richard Walker knew exactly the limit between comedy and buffoonery.... His Wilfred Shadbolt was sardonic, his Don Alhambra del Bolero urbane, his Pooh-Bah sanctimonious."