 From 1957 until the mid-1960s, Grey was an international guest ballerina across Europe, South America, Australasia, the Far East, the United States and Canada.In 1957, she became the first English dancer to appear as guest ballerina with the Kirov and Bolshoi Ballet.Grey was the first Western guest artist to dance with the Bolshoi Ballet (1957-1958), and to appear with the Peking Ballet and Shanghai Company (with a Chinese partner) in 1964.