Siena Nicole Kelly (born 1996) is a British actress. She earned a British Academy Television Award nomination for her performance in the Channel 4 drama Adult Material (2020). She has since played the titular character in BBC Three fantasy series Domino Day (2024) and appeared in the Netflix anthology Black Mirror (2025). Kelly is also known for her stage work, earning an Ian Charleson nomination.
Early life Kelly was born in the North London Borough of Camden. She initially trained as a dancer and performed in dance competitions. She graduated from Arts Educational School (ArtsEd) in 2017. She is a certified yoga instructor and teaches in London when she is not working as an actor.
Career After graduating from ArtsEd, Kelly made her professional stage debut as Ivy Green in On the Town at Regent's Park Open Air Theatre. For her performance, she was nominated for Best Actress in a Musical at The Stage Debut Awards.
Kelly made her television debut as Rhoda Swartz in the 2018 miniseries adaptation of Vanity Fair on ITV.
In 2020, Kelly starred as Amy in the Channel 4 drama miniseries Adult Material. For her performance, she was nominated for Best Supporting Actress at the 2021 British Academy Television Awards.
Kelly has focused on theatre, working on new and classical productions. Starring as Maggie in Cat on a Hot Tin Roof, Nora in A Dolls House and Anna in 1536.
She had her next leading screen role in 2024 BBC Three fantasy series Domino Day as the titular character. Kelly led an episode of Season 7 Black Mirror in 2025 and will star in new drama Charmer for Sky.
Filmography Year Title Role Notes 2018 Vanity Fair Rhoda Swartz 2019 Temple Michelle Wilson Series 1 2020 Adult Material Amy Deighton Lead role BAFTA nomination 2021 Hit & Run Syd 2024 Domino Day Domino Lead role 2025 Black Mirror Maria Bête Noire Lead Role2026Pride and PrejudiceCaroline Bingley2026The RaptureAnika Drake2027CharmerEmilyLead role
Stage Year Title Role Notes 2017 On the Town Ivy Green Regent's Park Open Air Theatre, London A Christmas Carol Jess Old Vic, London 2018 Describe the Night Hampstead Theatre, London 2019 Teenage Dick Anne Margaret Donmar Warehouse, London 2021 Cat on a Hot Tin Roof Maggie UK Tour 2022 Force Majeure Jenny Donmar Warehouse, London That is Not Who I Am Celeste Royal Court Theatre, London2024A Doll's HouseNoraCrucible Theatre, Sheffield 2025 1536 Anna Almeida Theatre, London20261536AnnaAmbassadors Theatre, London
Awards and nominations Year Award Category Work Result 2017 The Stage Debut Awards Best Actress in a Musical On the Town 2021 British Academy Television Awards Best Supporting Actress Adult Material 2025 Ian Charleson Awards A Doll's House
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