She is known for her roles in the Netflix series The Haunting of Bly Manor (2020), the ITV drama Hollington Drive (2021), and as voice of the titular Peppa Pig (2020–) on Channel 5.
She made her television debut in the BBC One soap opera EastEnders as Daisy, a role she would play from 2018 to 2019.
In 2020, Smith began voicing the titular Peppa Pig on Channel 5, taking over the role from Harley Bird for the animated show's sixth series.
[6] Smith had supporting roles as Eva in the 2021 ITV drama Hollington Drive,[7] for which she was nominated for a National Film Award,[8] and Emily Whitehouse in the 2022 Netflix thriller Anatomy of a Scandal.
[9] She shared the role of Charlotte McLean with her younger sister Darcie Smith the Sky Max science fiction series The Midwich Cuckoos and also appeared alongside Darcie in an episode of After Life.