I grew up in London where my mom danced for the Royal Ballet.
Awesome.  The Royal Ballet in internationally known. A very top notch ballet company.
Yes, she used to have to go to practice daily..
It's been around since 1931.  In watch years did your mom dance for The Royal Ballet?
The Royal Ballet
The Royal Ballet
The Royal Ballet is an internationally renowned classical ballet company, based at the Royal Opera House in Covent Garden, London, England. The largest of the four major ballet companies in Great Britain, the Royal Ballet was founded in 1931 by Dame Ninette de Valois, it became the resident ballet company of the Royal Opera House in 1946 and was granted a royal charter in 1956, becoming recognised as Britain's flagship ballet company.
The Royal Ballet was one of the foremost ballet companies of the 20th century
the Vic-Wells (later the Royal Ballet) in 1931 with 6 salaried dancers. International Ballet and the Festival Ballet were years away. Britain's best known dancers Alicia Markova and Anton Dolin had been in England since the collapse of Ballets Russes but had no large scale company to dance for. In 1930 serious professional ballet in London was at a low point and in the rest of the country was non-existent. 
Formation.
The Camargo Society was conceived by Arnold Haskell (ballet critic and prolific author)