[1] Hilliard appeared on the London stage in musical comedies, revues, and operas, including The Beggar's Opera (1922, 1925),[2] The Way of the World (1924), The Street Singer (1924), Riverside Nights (1926),[3] Parsifal (1927), Götterdämmerung (1927), The Pride of the Regiment (1932) and The Dubarry (1933).

Her appearances with the BNOC included parts in Coffee Cantata (1925), Pagliacci (1926), Hansel and Gretel (1926),[8] Romeo and Juliet (1926), The Tales of Hoffmann (1926), The Marriage of Figaro (1926, 1927), La bohème (1926, 1927), Carmen (1927), Faust (1928),[9] and La Vie Parisienne (1929).

[11] She fell ill while performing in a 1932 production of Noël Coward's Bitter Sweet in Liverpool.

[13][14] In 1926 she was a soloist at the Crystal Palace, for a concert of Handel opera choruses arranged by Sir Henry Wood.

[19] They had a son, George Alan Hill Baker, born in 1925,[20] who died during the Second World War.