After four more years of theatre in Britain, the couple moved to the US, where they presented Gilbert and Sullivan in two-person entertainments throughout North America.
[1] She was educated at the Bruton School for Girls,[2] before her father moved Helen, her two sisters, Joan and Sheila, and brother Denis, to Naples Italy for five years immediately after World War I.
After returning to England, she toured in Offenbach's The Tales of Hoffmann as the Doll and Antonia and also sang briefly in the chorus of the Glyndebourne Festival Opera.
[3] She began to perform there under the name Betty Roberts, but Rupert D'Oyly Carte soon asked her to change it to something more fitting to a leading lady, and she returned to her birth forename.
Pinafore, Mabel in The Pirates of Penzance, the title character in Princess Ida, Elsie Maynard in The Yeomen of the Guard, and Gianetta in The Gondoliers.
[5] The Times repeatedly praised her singing and appearance,[6] and The Manchester Guardian, reviewing the company's 1941 tour, wrote, "One of the chief pleasures of last night's performance was the lovely voice of Miss Helen Roberts.
Roberts and Walker also gave two-person concert tours of Gilbert and Sullivan throughout North America in the early 1950s, where they lived for several years.
U.S. President Eisenhower asked the Walkers to give their concert programme at his pre-inauguration party at the White House following his re-election in 1956, but they were unable to travel from Australia to attend.