Her Majesty's Theatre. He made his Sadler's Wells debut in England in 1962, where he performed many Verdi operas including Attila, Rigoletto and Un ballo in maschera. He also performed at the Royal Opera House, Covent Garden, where he made his debut as Calaf in Puccini's Turandot opposite the English soprano Amy Shuard. He established his career in the UK for six years, before returning to Australia in 1967 to sing with the Australian Opera in major roles including Canio, Manrico (Il trovatore), Bob Boles (Peter Grimes), the Duke of Mantua (Rigoletto), Dick Johnson (The Girl of the Golden West), Cavaradossi (Tosca), Radames (Aida), and King Gustavus (Un ballo in maschera). He also sang the Germanic operatic repertoire, including Florestan in Fidelio and Eric in The Flying Dutchman. During the 1970s, Smith and his son Robin Donald, also a tenor, made operatic history together, alternating singing the role of Eric in The Flying Dutchman, in performance with the Australian Opera Company (now Opera Australia). Robin also sang the role of The Steersman in performances on other occasions, when Donald was singing the role of Eric. These are the only known performances of any father and son tenors ever singing these roles together in this opera. In 1968, the first opera telecast in Australia, Tosca, featured Marie Collier in the title role, Smith as Cavaradossi, and Tito Gobbi as Scarpia. On 21 January 1973 Smith was the first voice to sing in the Sydney Opera House, when he appeared in the first test concert in the Opera Theatre, along with Elizabeth Fretwell and members of the ABC National Training Orchestra, conducted by Robert Miller. While Italian opera (and particularly where sung in English) was his natural metier, he also performed many concerts and song recitals. Together with his son Robin Donald, they presented in 1974 a series of "Smith & Son" concerts throughout Australia singing in Brisbane, Sydney, Melbourne and Adelaide. Smith's last performance for the Australian Opera was in Verdi's I masnadieri in 1980 with Joan Sutherland. While Smith and Sutherland did perform together in a number of concerts at the Sydney Opera House, I masnadieri was the only occasion when these two Australian icons performed a complete staged opera together. His health began to fail and in 1981 he retired from the professional operatic stage. He later became a singing teacher in Brisbane at the Queensland Conservatorium of Music.