[1] At the age of 10, she was the youngest person ever to win a scholarship to the Royal Academy of Music,[2] where she also won the Sterndale Bennett Prize.
When she was 14, she taught 30 pupils of her own, and two years later she became a piano professor, under Myra Hess at Tobias Matthay's London music school.
[2] Later she married an Anglican priest, the Reverend H. Cashel Thomas, who in the early 1940s was vicar of St Philip's in London.
[3] Her best-known recording is probably that of the Delius Piano Concerto, with her husband conducting the Royal Philharmonic Orchestra, in October 1946, shortly after he had founded it.
[4] According to the Lucas biography, her performance of the Delius concerto at Lafayette, Indiana, on 1 December 1950, marked the end of Lady Betty's playing career.