Leonard Snelling

Jacqueline, a London gutter-snipe is "befriended" by Marius Andreani, a diplomat known for being a rounder with the ladies, but he goes pure with Jacqueline, resolved to help her to the heights of Terpsichore, for which she has a talent. But the friend of his, an elderly benefactor who secretly advanced the funds, through a priest, makes a play for her while she is climbing the ladder to success. He also has Marius appointed to a diplomatic post in Shanghai. (imdb)

The Three Maxims are trapeze artists Pat (Anna Neagle), Toni (Tuilio Carminati) and Mac (Leslie Banks). After spending most of their careers in the small time, the threesome finally get their big chance in Paris, at which point Mac realizes he's in love with Pat.