Barnfield began acting in 1997 at age nine. In 2000, Barnfield won the role of bully Maddie Gilks in
Grange Hill, in which she found herself in central plots during her four years on the series. After
Grange Hill, Clarke filmed
Popcorn with
Jodi Albert and
Jack Ryder, and plays the character of Yukino. She has also appeared in the
Sky1 football drama
Dream Team. Other roles include Zoe Stringer in
Filthy Rich, in which she plays the daughter of Mike Reid's character shortly before the actor died;
The Bill, in which she played Chloe Fox for three episodes in 2004 and Kelly Burgess in October 2007; and
Casualty, in which she appeared as Claudie Waters for two episodes on 29 and 30 December 2007. In 2008, Clarke was the face of
Clean & Clear, appearing in adverts for the skincare brand. She also starred in the road safety advert "Mess". In 2008 she became
Galaxy chocolate's "Miss Kiss" to advertise the company's Christmas Mistletoe Kisses chocolates. She appeared in the
E4 sitcom
The Inbetweeners as Neil's sister, Katie, in the second-series episode "
A Night Out in London" (2009) and the third-series episode "
Will's Dilemma" (2010). Clarke made her theatrical film debut as Crystal Waters in the Screen Gem's 3D action film
Resident Evil: Afterlife alongside
Milla Jovovich,
Wentworth Miller and
Ali Larter. It topped the box office in September 2010. Clarke also starred in the TV movie
Lake Placid 3, in which she plays Ellie; this was also in 2010. In 2011, she played the lead role of Kate in
Johannes Roberts'
Roadkill, a horror film about a group of teens taking an ill-fated RV trip around
Ireland. Her performance was well received. Clarke appeared as Barb in Jeremy Leven's 2013 movie
Girl on a Bicycle. In June 2011,
Variety magazine reported that Clarke would co-star in
Glutton, a "3D psychological thriller" directed by
David Arquette, playing Virginia, the blind neighbour and only friend of a 1,200-pound man, played by (
Abraham Benrubi).
Patricia Arquette also stars in it.
Glutton was to begin filming in
Canada in summer 2011, though no film under that title has been released. ==Filmography==