Noma Dumezweni makes her Disney feature film debut as Penny Farthing in the film Mary Poppins Returns. As an English actress, Noma Dumezweni is known for portraying Hermione Granger in the original West End production of Harry Potter and the Cursed Child.
Penny is first seen when Jane Banks and her husband Michael enter the bank just as Mr. Wilkins remembers the jar of sweets on her desk used to have toffee in the jar just as the parents follow him into the office. She later appears when the children explore the bank while Mary Poppins waits to talk to Mr. Wilkins. Encountering Penny, the children ask her for a sweet to which she agrees. She then talks to Wilkins who asks her to give him tea to which she agrees to help. Afterwards, it is unknown what happened to her after the Banks family got their home back, though it is possible that she remains her duty as a bank worker.