Clarkson made her television debut in two 2009 episodes of the
Doctor Who spinoff
The Sarah Jane Adventures as Elizabeth Marchwood in "
The Eternity Trap". This was followed by her feature film debut with a small role in
Mr Nice. Clarkson portrayed a young version of the titular
Jane Eyre (played by
Mia Wasikowska as an adult) in the
2011 film adaptation of
Charlotte Brontë's novel. In 2013, Clarkson starred in the dance film
All Stars as Rebecca. The following year, she played Kelly Grimes in the
ABC Cold War-set miniseries
The Assets and Muriel Mottershead in the
BBC One biographical drama
Our Zoo. She was cast in an
Amazon Prime pilot titled
Casanova with
Diego Luna. Clarkson joined the recurring cast of the
ITV period drama
Poldark for its second series as Rosina Hoblyn (later Carne), a role she would reprise in the fourth and fifth series. She also had a recurring role as Sophie in the
History series
Knightfall and appeared in the film
Intrigo: Dear Agnes. Clarkson was then cast in series 3 of the
Netflix medieval drama
The Last Kingdom as
Lady Aelflaed. Initially a recurring character, she was promoted to the main cast for
The Last Kingdom's final two series, the latter of which was released in 2022. Later in 2022, Clarkson starred as Wren Davis opposite
Isis Hainsworth in the
BBC One teen horror series
Red Rose, which had an international release on Netflix the following year. Clarkson has an upcoming role in the vampire film
Blood & Ink with
Malcolm McDowell and
Derek Jacobi. ==Filmography==