Kacey Louisa Clarke was born Kacey Louisa Barnfield. In the past she has been credited as Barnfield but now professionally she uses her mother's maiden name, Clarke.
As a child she was best known for her role as Maddie Gilks in the hit BBC TV show
Grange Hill (1978), in which she was a series regular for six years.
She was born in Enfield, North London. She is a second cousin of the actress Victoria Shalet.
She has a brother Kye and a sister Tyla.
Kacey's acting career began in 1997 when she was just 9, appearing in advertisements and stage plays. In 2000, Kacey won the role of bully Maddie Gilks, girlfriend to Baz Wainwright (played by
Tom Hudson), in
Grange Hill (1978), where she found herself the central role in central plots during her five-year stint on the show, It was Kacey's first major acting role.
After
Grange Hill (1978) Kacey filmed
Popcorn (2007) with
Jodi Albert and
Jack Ryder, and plays the character of Yukino. She has also appeared in the popular Sky1 football drama
Dream Team (1997). Other roles include,
The Bill (1984), where she played Chloe Fox for 3 episodes in 2004 and appeared again in October 2007 as Kelly Burgess, and
Casualty (1986) in which she appeared as Claudie Waters for 2 episodes on 29 and 30 December 2007. In 2008, Kacey was the face of Clean & Clear, appearing in adverts for the skincare brand. She also starred in the Road Safety commercial 'Mess'. In 2008 she became Galaxy chocolate's 'Miss Kiss' to publicize their Christmas Mistletoe Kisses chocolates.
In 2009 and 2010 she appeared in the E4 sitcom
The Inbetweeners (2008), as Neil's sister Katie in the series 2 episode "
Night Out in London (2009)" and
series 3's "
Will's Dilemma (2010)". She became renowned for the role in the UK.
Kacey made her theatrical film debut as Crystal Waters in the Screen Gem's 3D horror film
Resident Evil: Afterlife (2010), alongside
Milla Jovovich,
Wentworth Miller and
Ali Larter. It topped the box office in September 2010. Also in 2010 Kacey starred in the TV movie
Lake Placid 3 (2010), where she plays Ellie.
In 2011 she played the lead role of Kate in
Johannes Roberts'
Roadkill (2011), a horror film about a group of teens taking an ill-fated RV trip around Ireland. Her performance was well received. Kacey also appeared as Barb in
Jeremy Leven's
Girl on a Bicycle (2013).
In September 2011 Kacey was the female lead of Annabel in Sy-Fy
Channel's
Jabberwock (2011) opposite
Battlestar Galactica (2004)'s
Tahmoh Penikett.
Directed by
Steven R. Monroe. In 2013, Kacey starred as the female lead in
Green Street 3: Never Back Down (2013) opposite
Scott Adkins.
Other productions she has been involved in include feature film
Welcome to Curiosity (2018) as Martine and
Bayou Tales (2019) as Neilson.
In 2015 she played tomboy Charlie, one half of a lesbian couple, in
Seeking Dolly Parton (2015) which had a successful festival run and many rave reviews. Kacey was quoted as "Charming and deeply affecting" for her sincere portrayal of Charlie.
In
Blood Orange (2016) Kacey played the female lead opposite
Ben Lamb and
Iggy Pop.