30s-40s, Neutral, RP, London, Cockney, Jamaican, British American
©Joseph Sinclair
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British actress T’Nia is best known for her recent starring role in Netflix’s supernatural horror series ‘The Haunting of Bly Manor’ which was the worldwide number one show on Netflix for 3 weeks.  She received a nomination for a Critic’s Choice Super Award and her performance received widespread acclaim, with Vanity Fair praising her standout performance and The Hollywood Reporter remarking that “Miller shines” in the pivotal fifth episode of the season. The show is widely tipped for Emmy nomination. 

She is also recognisable for her work as the dynamic ‘Celeste’ on the BBC/HBO drama series ‘Years and Years’ in which she starred alongside Emma Thompson and Rory Kinnear.  She won 'Best Actress in a TV Series' at the National Film Awards in 2021 for this role.  The series also won three RTS Awards and was nominated for three Critics Choice Awards.

Other notable TV credits include a memorable turn on Netflix's critically acclaimed series, ‘Sex Education’, Amazon’s sci-fi drama ‘The Feed’ and the multiple award winning ‘Obey’ (also Amazon) which won ‘Best Cinematography’ at the TriBeCa Festival.  She has also appeared in Netflix’s teen drama series ‘Free Rein’, ITV crime dramas ‘Hatton Garden’ and ‘Marcella’ as well as season 9 of ‘Doctor Who’ on the BBC and C4’s award winning series ‘Cucumber’ and its spin-off series ‘Banana’ (both currently showing on Netflix). 

T'Nia also has major roles in two new TV series scheduled for release in 2021, Spanish adventure thriller ‘La Fortuna’ and Apple TV’s new sci-fi drama ‘Foundation’. She will also appear in the new Amazon sci-fi thriller 'The Peripheral' when it is released in 2022. 

Outside of acting, she is an activist and a passionate proponent of natural hair in the Black community.  She is also a strong advocate for the Black Lives Matter movement. 

T’Nia’s native accent is neutral British. Being London born, she can swing into a London or Cockney accent and Jamaican comes easily due to her parentage. Her American accent is also faultless having used it for two major roles in La Fortuna & Foundation.

Age Range



The Peripheral (TV, 2022) – 'Cherise', Amazon Prime
La Fortuna (TV, Scheduled for 2021) – 'Susan McLean, Movistar +/AMC Studios
Foundation (TV, Scheduled for 2021) – 'Halima', Apple TV+
The Haunting of Bly Manor (TV, 2020) – 'Mrs Grose', Netflix
Sex Education (TV, 2020) – 'Maxine', Season 2, Netflix
Years and Years (TV, 2019) – 'Celeste Lyons, BBC/HBO
The Feed (TV, 2019) – 'Charlie Morris', Amazon
Hatton Garden (TV, 2019) – WDC Laura McIntyre, ITV
Obey (Film, 2018) – 'Chelsea', Amazon
Free Rein (TV, 2018) – 'Claire', Netflix, Series 3
Silent Witness (TV, 2018) – 'D.I. Gibbs', BBC
Marcella (TV, 2018) – 'Aleesha', Series 2, ITV
Witless (TV, 2016-2018) – 'DC Wilton' (Series Regular, Series 1, 2 & 3), BBC Three
Born to Kill (TV, 2017) – 'Lisa', World Productions for Channel 4
Doctor Who (TV, 2015) – 'The General', Series 9, BBC
Banana (TV, 2015) – 'Kay', E4
Cucumber (TV, 2015) – 'Kay', Channel 4

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Showreel Videos

Visual Showreel
BFI 'What's in a name?'
Trailer: The Haunting of Bly Manor