On television, she is known for her roles in the BBC iPlayer teen series Get Even (2020), the Netflix crime drama Stay Close (2021), and the ITV biopic Nolly (2023).
[3][4] She also spent many years training with Adage Dance studio in Selly Oak, Spotlight Stage School in Solihull, and with the British Youth Music Theatre.
[6] Antonia began her career when she was 14, appearing in the Shakespeare Birthplace Trust short film adaptation of The Tempest following local open auditions.
In late 2021, Antonia played Kayleigh Shaw in the eight-episode Netflix crime drama Stay Close, part of a collaboration between Red Production Company and Harlan Coben.
As of 2022, Antonia portrays Princess Baela Targaryen in the HBO fantasy series House of the Dragon, a Game of Thrones prequel and adaptation of George R. R. Martin's fictional history book Fire and Blood.