Sinead Matthews (born 1980) is an English actress whose credits include film, television, radio and stage. As well as having extensive theatre experience, her screen credits include He Knew He Was Right (2004), Vera Drake (2004), Pride & Prejudice (2005), Ideal (2005–2010), Terry Pratchett's Hogfather (2006), Nanny McPhee and the Big Bang (2010), Black Mirror (2013), The Smoke (2014), Jellyfish (2018), The Crown (2019), and Hullraisers (2022).
She attended Cardinal Wiseman Catholic School in Coventry, then studied A-level drama at Stratford-upon-Avon College for two years between 1996 and 1998. She went on to study acting at Royal Academy of Dramatic Art (RADA) in London, graduating in 2003 with a BA in Acting (H Level).
In 2013, she played a lead role in series one of Black Mirror, as Sarah in the episode "Be Right Back", with Domhnall Gleeson and Hayley Atwell. In August 2016, Matthews played Hermia/Fairy/Mistress Quince in A Midsummer Night's Dream, composed by Felix Mendelssohn, at The Proms. In 2019 she played Marcia Williams, political secretary to Prime Minister Harold Wilson, in season three of the TV series about the royal family, The Crown. From 2022 to 2023, she played a main role as Paula in the Channel 4 british sitcom Hullraisers.
| +Key | Denotes productions that have not yet been released |
| 2004 | Vera Drake | Very Young Woman | |
| 2005 | Pride & Prejudice | Betsy | |
| 2006 | Terry Pratchett's Hogfather | Violet | TV film |
| 2007 | Wednesday | Lilya | Short film |
| Spring 1941 | Tania | ||
| Half Broken Things | Steph | TV film | |
| Who Gets the Dog? | Claire Evans | TV film | |
| 2008 | Happy-Go-Lucky | Alice | |
| In Love with Barbara | Barbara Cartland | TV film | |
| Trimming the Fat | Receptionist | Short film | |
| 2009 | The Boat That Rocked | Miss Clitt | |
| 2010 | Nanny McPhee and the Big Bang | Miss Topsey | |
| 2011 | Wreckers | Sharon | |
| 2013 | Bed Trick | Rachel | Short film |
| 2014 | Mr. Turner | Queen Victoria | |
| 2015 | The Process | Leni | |
| Across the Sea | Mother | Short film | |
| 2016 | The Roof | Brooks' Assistant | Short film |
| Mother | Shoe Shop Assistant | Short film | |
| Kaleidoscope | Abby | ||
| Fantastic Beasts and Where to Find Them | Mildred | Deleted scenes only | |
| 2017 | Daphne | Billie | |
| National Theatre Live: Hedda Gabler | Mrs. Elvsted | ||
| Wraps | Emma | Short film | |
| 2018 | Jellyfish | Karen Taylor | |
| Happy New Year, Colin Burstead | Lainey | ||
| 2019 | The Wrong Car | Ella | Short film |
| A Serial Killer's Guide to Life | Izzy | ||
| Muscle | Sandra | ||
| Us Among the Stones | Anna | ||
| 2021 | I'm Not in Love | Lena | |
| Radio Silence | Cassie | Short film | |
| Iris | Julia | Short film | |
| TBC | Nairn | Kay | Post-production |
| 2004 | The Afternoon Play | Chantelle Hughes | Episode: "Viva Las Blackpool" |
| He Knew He Was Right | Mary | Mini-series | |
| 2005-2010 | Ideal | Jenny | Series regular |
| 2007 | Trial & Retribution | Rachel Burns | Episode: "Curriculum Vitae" |
| 2013 | Black Mirror | Sarah | Episode: "Be Right Back" |
| Way to Go | Debbie | Series regular | |
| 2014 | The Smoke | Julia | Mini-series |
| 2015 | Inside No. 9 | Sarah Nutter | Episode: "The Trial of Elizabeth Gadge" |
| Toast of London | Varrity Map | Episode: "Man of Sex" | |
| 2017 | Chewing Gum | Emma | Recurring role, 4 episodes |
| In the Dark | Paula Days | Mini-series | |
| 2018 | Hang Ups | Alice Ross | Episode: "Series 1, Episode 6" |
| 2019 | The Crown | Marcia Williams | Recurring role, 3 episodes |
| 2020 | Sick of It | Jules | Episode: "The Biscuit" |
| 2021 | Midsomer Murders | Mel Wallace | Episode: "The Wolf Hunter of Little Worthy" |
| 2022 | Hullraisers | Paula | Main character |
| 2023 | Murder is Easy | Miss Waynflete | Two-part drama |
| 2024 | Things You Should Have Done | Michelle | Recurring role, 3 episodes |
| 2004 | The Crucible | Abigail Williams | Crucible Theatre, Sheffield | |
| 2004–2005 | Nikolai Erdman | Anastasia | Cottesloe Theatre, London | |
| 2005 | The Birthday Party | Lulu | Duchess Theatre, London | |
| The Wild Duck | Hedvig | Donmar Warehouse, London | ||
| 2005–2006 | You Never Can Tell | Dolly Clandon | Theatre Royal, Bath & Garrick Theatre, London | also, UK tour |
| 2007 | Women of Troy | Cassandra | Lyttelton Theatre, London | |
| 2008 | Ben Schiffer | Daisy | Bush Theatre, London | part of "The Broken Space Season" |
| Nancy Harris | Vicky | Bush Theatre, London | part of "The Broken Space Season" | |
| 2009 | Our Class | Dora | Cottesloe Theatre, London | |
| 2010 | Penelope Skinner | Rose | Bush Theatre, London | |
| Frank Wedekind | Lulu | Gate Theatre, London | with Headlong Theatre | |
| The Glass Menagerie | Laura Wingfield | Young Vic, London | ||
| 2011 | Ecstasy | Dawn | Hampstead Theatre, London | |
| 2012 | The Master and Margarita | Margarita | Barbican Centre, London | also Tour |
| The Way of the World | Millamant | Crucible Theatre, Sheffield | ||
| The Changeling | Beatrice-Joanna | Young Vic, London | ||
| 2013 | A Time to Reap | Marysia | Royal Court Theatre, London | |
| Claudia Dey | Sugar | Southwark Playhouse, London | ||
| 2014 | Carrie Cracknell | The Shed, London | ||
| Pests | Pink | Royal Exchange, Manchester & Royal Court Theatre, London | also, UK tour | |
| 2015 | The Wasp | Heather | Hampstead Theatre, London | |
| The Hudsucker Proxy | Amy Archer | Nuffield Theatre, Southampton & Everyman Playhouse | ||
| Wallace Shawn | Jane | Dorfman Theatre, London | ||
| 2016 | Giving | Laura | Hampstead Theatre, London | |
| A Midsummer Night's Dream | Hermia | Royal Albert Hall, London | with BBC Scottish Symphony Orchestra | |
| Hedda Gabler | Mrs. Elvsted | Lyttelton Theatre, London | ||
| 2017 | Loot | Fay | Park Theatre, London & Watermill Theatre, Bagnor | |
| 2018 | Rodney Ackland | Elizabeth Collier | Lyttelton Theatre, London | |
| 2019 | Kenneth Lonergan | Doris | Wyndham's Theatre, London | |
| Annie Baker | Eleanor | Dorfman Theatre, London | ||
| 2022 | Mad House | Pam | Ambassadors Theatre | |
| 2024 | Till the Stars Come Down | Sylvia | Dorfman Theatre, London |
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