Although there were complaints within the BBC, there was praise from outside it for Sargent's work with the orchestra. His biographer Reid wrote, "Sargent's liveliness and drive soon gave BBC playing a gloss and briskness which had not been conspicuous before". Another biographer, Aldous, wrote, "Everywhere Sargent and the orchestra performed there were ovations, laurel wreaths and terrific reviews." The orchestra's reputation both in Britain and internationally grew during Sargent's tenure. Briggs records that conductor had "great moments of triumph ... both at festivals overseas and during the Proms". In the 1950s and 1960s he made many recordings with the BBC Symphony, as well as other ensembles, as described below. In this period, also, he conducted the concerts that opened the Royal Festival Hall in 1951 and returned to the D'Oyly Carte Opera Company for the summer 1951 Festival of Britain season at the Savoy Theatre and the winter 1961–62 and 1963–64 seasons at the Savoy. In August 1956 the BBC announced that he would be replaced as Chief Conductor of the BBC orchestra by Rudolf Schwarz. Sargent was given the title of "Chief Guest Conductor" and he remained Conductor-in-Chief of the Proms.