Topzle Updated: Wikipedia source
Sonya Cassidy (born 5 March 1987) is a British actress. Her credits include The Tudors (2009), The Paradise (2012), Vera (2012–2014), The Great Fire (2014), Survivor (2015), Olympus (2015), Humans (2016), The Woman in White (2018), Lodge 49 (2019), The Last Kingdom (2022), The Man Who Fell to Earth (2022), The Hunt For Raoul Moat (2023), and season 3 of Reacher (2025).
| Year | Title | Role | Notes |
| 2013 | The Fifth Estate | Alan's secretary | |
| 2015 | Survivor | Helen | |
| 2016 | Breaking the Bank | Annabel |
| Year | Title | Role | Notes |
| 2009 | Doctors | Ellen Harkness | Episode: "A Bit of What You Fancy" |
| 2009 | Lewis | Alison | Episode: "The Quality of Mercy" |
| 2009 | The Tudors | Christine, Duchess of Milan | Episode: "Search for a New Queen" |
| 2010 | Midsomer Murders | Beatrice Daniels | Episode: "The Made-to-Measure Murders" |
| 2012–2013 | The Paradise | Clara | Main role |
| 2012–2014 | Vera | Celine Ashworth | Recurring role, 8 episodes |
| 2013 | Endeavour | Joyce Morse | Episode: "Home" |
| 2014 | The Great Fire | Catherine of Braganza | TV miniseries |
| 2015 | Olympus | Oracle | Main role |
| 2016 | Ripper Street | Leda Starling | Episode: "Some Conscience Lost" |
| 2016 | The Rebel | Verity | Episode: "Charity" |
| 2016 | Humans | Hester | Recurring role, 8 episodes |
| 2018 | The Woman in White | Countess Fosco | Main role |
| 2018–2019 | Lodge 49 | Liz Dudley | Main role |
| 2020 | Soulmates | Allison | Episode: "The Lovers" |
| 2022 | The Last Kingdom | Eadgifu | Main role (season 5) |
| 2022 | The Man Who Fell to Earth | Edie Flood | Main role |
| 2023 | The Hunt For Raoul Moat | Diane Barnwell | TV series |
| 2025 | Reacher | Special Agent Susan Duffy | TV series |