[a] As a teenager, Hazell started life as a performer in the chorus of the West End production of Rodgers and Hart's On Your Toes (1937).

[4] Hazell's given named of Hyacinth was abbreviated to "Hy" by Nigel Patrick when they were in Italy during World War II entertaining troops.

[7] She married Edward Adam Primrose Jenkins, land agent to the Duke of Marlborough, in 1950; he died in June 1960 at the age of 50.

[8] In the summer of 1969, Hazell began playing Golde in Fiddler on the Roof in London's West End.

[9] On 10 May 1970, a Sunday when there was no performance, she died accidentally by choking to death whilst eating a steak at a friend's house.