Though she denied the suggestion, it is understood as a roman à clef regarding Malleson's relationship with philosopher and political activist Bertrand Russell, with whom she shared an interest in pacifism.

Unimpressed with the school, she referred to it in her 1931 autobiography, After Ten, as "Damned Hell", demonstrating an early contempt for aristocratic decorum.

The couple divorced in December 1922 after Miles failed to comply with a decree for restitution of conjugal rights obtained by Constance on 15 May the same year.

[8] Malleson appeared in many West End productions, including The Orphans at the Lyceum Theatre,[9] and at least one film, Hindle Wakes.

[5][10][11] Malleson believed that the short run plays that define repertory theatre were important for the development of young dramatists because they provided an opportunity to see how an audience reacts to one's work.

The cast, which included Una O'Connor and Charles Carson, was headed by Moyna Macgill in the role of Rosaleen Moore, a part written for her by Malleson.

It was Russell who submitted Malleson's first published short story, "The End", which was released in the September 1919 edition of the English Review under the pseudonym Christine Harte.

"[1] Malleson traveled extensively throughout her life including visits to the Middle East and Africa, in addition to frequent trips to the Nordic countries.

She carried out lecture tours in the Nordic countries during the 1930s and 1940s, speaking on social reform topics including mental health and blood supply.

She escaped by rowing 25 miles to Helsinki in a boat, where she was held for several days, before securing passage to Stockholm aboard a Swedish warship.