Antonia has been acting professionally since the age of 12. Her debut role was in 1997, playing Mandy McFarlane in the television series "Mirror Mirror - Series 2". This was followed by the role of Jem in "William Shatner's A Twist in the Tale".
She then played one of the leading roles, Trudy, in the popular series "The Tribe" from 1998 to 2003. As a young adult, Antonia worked on three separate seasons of "Power Rangers" and then began her six-season stint playing Loretta West in the award-winning series "Outrageous Fortune" in 2005.
After filming completed on "Outrageous", Antonia went on to have roles in the tele-movies "Spies and Lies" and "The Women's Vote". In the last few years, she played leading roles in four feature films: "Timeslow", "The Cure", "White Lies", and "Pork Pie" in 2016.
She also took on two presenting roles, first for the travel show "My Kinda Place" and next for the TV series "Smokefree Rockquest". Television-wise, Antonia played leading roles in both "The Blue Rose" (2012) and "Anzac Girls" (2013). She featured as a guest lead on the WGN flagship show "Salem" (2014) and in 2016 she joined Rebecca Gibney in the Australian series "Winter", playing Detective Alesia.
Antonia then returned home to star in the "Outrageous Fortune" prequel, "Westside". In 2017, she filmed the Netflix Original series "Sisters", and in 2019 completed filming on "Westside", season 6.
Antonia loves to perform in the theatre. Her notable roles include Kate Hardcastle in "She Stoops to Conquer" (2009),numerous characters in "The Vagina Monologues" (2010),Sally Bowles in "Cabaret" (2010-2011),and Laura Wingfield in "The Glass Menagerie" (2013).
Antonia has received a number of accolades for her work. She was awarded "Best Actress" for her portrayal of Rita West in "Westside" at the New Zealand TV Awards in 2018. She was also nominated for the same award in 2017.
