 While he was with D'Oyly Carte, Potter also appeared every two weeks on the Welsh television show, "Land of Song".He left the company in 1970 (the year after his co-star, soprano Valerie Masterson, left the company) but returned as a guest artist to play several roles in 1970–71.In 1975, during the D'Oyly Carte Opera Company's centennial season, Potter was invited to participate in the final performance of "Trial by Jury", in which the company's regular chorus was augmented by fourteen former stars of the company.