Kacey Ainsworth

• Name — Kacey Ainsworth • Born — 19 October 1968 • Birthplace — Ware, Hertfordshire, England • Occupation — Actress • Children — 2 • Years Active — 1995–present

Upon finishing senior school, Ainsworth secured a job at the advertising firm Saatchi & Saatchi. She went on to train at the Royal Central School of Speech and Drama, completing a BA (Hons) in Acting.

Ainsworth began her career at the age of nine, playing orphan Tessie in the original West End run of Annie from 1978 to 1981. She returned to acting in the 1990s, appearing in various guest parts on television and as Miss Fitzherbert in Mike Leigh's Oscar-nominated musical drama Topsy-Turvy (1999), before joining the cast of the BBC soap opera EastEnders, where she played Little Mo—a member of the Slater family—between September 2000 and May 2006. The storyline in which her character endured a prolonged campaign of abuse at the hands of her husband has since been recognised as one of the most powerful depictions of domestic violence in British television history, with Ainsworth commenting that the role often left her physically and emotionally drained. Since leaving EastEnders, Ainsworth has appeared in a string of guest roles on series such as Hotel Babylon, Midsomer Murders, Casualty, Doctors, Call the Midwife, Moving On, Shakespeare & Hathaway, and The Madame Blanc Mysteries. She also starred as Inspector Jenny Black in the BBC's HolbyBlue (2007–2008), appeared in the recurring role of Miss Gullet on the debut season of CBBC's The Worst Witch (2017), and played a supporting role in the acclaimed film Lynn + Lucy (2019). She has co-starred as Cathy Keating in the ITV detective drama Grantchester since 2014, writing an episode for its ninth season in 2025. On stage, Ainsworth starred in touring productions of The Taming of the Shrew (1998), Calendar Girls (2011–2012), and Steel Magnolias (2012). In 2019, her portrayal of Mrs. Lovett in Stephen Sondheim's Sweeney Todd—at the Everyman Theatre—drew praise, with Michael Billington of The Guardian calling it an "outstanding performance".

• Year — Title — Role — Notes • 1995 — Peak Practice — Julia — Episode: "Walking Away" • Under the Moon — Sarah — Television film • 1996 — A Touch of Frost — Carole Nash — Episode: "The Things We Do for Love" • Accused — Rosie Murray — Episode: "Billy" • The Moonstone — Drusilla Clack — Television film • 1996–1997 — The Bill — Paula Sheriton / Gail Painter — 2 episodes • 1997 — Cone Zone — Loretta — 4 episodes • The Beggar Bride — Tina — Main cast; 2 episodes • 1998 — Touch and Go — Val — Television film • Where the Heart Is — Tracey — Episode: "Love" • 1999 — Topsy-Turvy — Miss Dorothea Fitzherbert — Feature film • 2000 — Happy Birthday Shakespeare — Rita — Television film • Safe as Houses — Jan — Television film • 2000–2006 — EastEnders — Little Mo Mitchell — Series regular; 552 episodes • 2001 — Girl from Rio — Sales Assistant — Feature film • 2007 — Hotel Babylon — Maria Henson — Episode #2.1 • 2007–2008 — HolbyBlue — Inspector Jenny Black — Main cast; 14 episodes • 2010 — Rock & Chips — Edna — Episode: "Five Gold Rings" • 2011 — M.I. High — Margaret Fontana — Episode: "Bully Elliot" • Tracy Beaker Returns — Xanthe — Episode: "Grandad" • Midsomer Murders — Nikki Rowntree — Episode: "Echos of the Dead" • 2013 — The Wright Way — Valerie Wright — Main cast; 5 episodes • 2014 — Casualty — DS Annie Reardon — Episode: "Valves to Vagrants" • Doctors — Ruby Slade — Episode: "Snowbabies" • Call the Midwife — Nancy — Episode: "Christmas Special" • 2014–present — Grantchester — Cathy Keating — Main cast; 65 episodes • 2016 — Agatha Raisin — Francie Juddle — Episode: "Witch of Wyckhadden" • 2017 — The Worst Witch — Miss Gullet — Recurring; 12 episodes • 2017–2018 — Loose Women — Self/Guest Panellist — 3 episodes • 2018 — We the Kings — Susan — Feature film • 2019 — Lynn + Lucy — Caroline — Feature film • 2020 — Moving On — Vicky — Episode: "Second Sight" • Then & Now — Claire — 3 episodes; also co-writer • 2021 — The Battersea Poltergeist — Lily Chibbett (voice) — Podcast; 3 episodes • Torchwood — Jill Kerr (voice) — Podcast; episode: "The Five People You Kill in Middlesbrough" • Sliced — Denise — Episode: "Mad Innit?" • The Mallorca Files — Linda Ball — Episode: "The Blue Feather" • 2023 — Doctor Who: The Sixth Doctor Adventures — Beryl (voice) — Podcast; episode: "Girl in a Bubble" • 2024 — Whitstable Pearl — Cassie — Episode: "Death, the Devil and the Fool" • 2025 — Shakespeare & Hathaway: Private Investigators — Jane Folle — Episode: "A Rose by Any Other Name" • The Madame Blanc Mysteries — Aurielle Alfonse — Episode: "Christmas Special"

• Year — Film — Role — Notes • 1978–1981 — Annie — Tessie — Victoria Palace Theatre • 1995 — Pale Horse — Lucy — Royal Court Theatre • 1996 — Serving It Up — Teresa — Bush Theatre • 1997 — Attempts on Her Life — Girl — Royal Court Theatre • 1998 — The Taming of the Shrew — Kate — UK tour • 1999 — Sleep With Me — Lorraine — Royal National Theatre • 2006 — The Exonerated — Guest Lead — Riverside Studios • 2009 — Carrie's War — Auntie Lou — Apollo Theatre • 2011–2012 — Calendar Girls — Miss November — UK tour • 2012 — Steel Magnolias — Annelle — UK tour • 2013 — Laughton — Elsa Lanchester — Stephen Joseph Theatre • 2015 — Feed the Beast — Sally — Birmingham Repertory Theatre • 2018 — Holes — Warden — Nottingham Playhouse • 2019 — Sweeney Todd — Mrs. Lovett — Everyman Theatre • 2022 — Lava — Vicky — Soho Theatre • 2023 — Little Women — Marmee — HOME • 2024 — Leaves of Glass — Liz — Park Theatre • Jab — Anne — Finborough Theatre