At the age of 13 she was chosen by Sir Trevor Nunn to play the role of ‘Young Jenny’ in his production of Aspects of Love at the Menier Chocolate Factory.

[7] In 2017 she played Hilde in The Lady from the Sea, directed by Kwame Kwei-Armah at the Donmar Warehouse, and her performance won third prize at the Ian Charleson Awards.

[10] In 2016, she appeared in Tom Ford's Nocturnal Animals,[11] playing the daughter of Jake Gyllenhaal and Isla Fisher's characters, in a film also starring Amy Adams.

[11][8] In 2019,[Note 1] Bamber played the adult Cosette in the BBC 1 television series Les Misérables with Dominic West and Olivia Colman.

[8] Later in the year (December), she would star as Mandy Rice-Davies in The Trial of Christine Keeler, another BBC 1 series, alongside Sophie Cookson and James Norton.