She has portrayed Alice Guppy in Torchwood, Abby Evans in Casualty, Lizzie Siddal in Desperate Romantics, Daisy Hannigan-Spiteri in Being Human, Medea in Atlantis, and Merida in the fifth season of the ABC fairy tale drama series Once Upon a Time.
[6] She trained at the Central School of Speech and Drama, leaving early to film Pumpkinhead: Blood Feud in Romania.
[7] Manson has lent her voice to the radio dramas Lost in Plain Sight, The Summer Walking and The Dead Hour.
Manson played Lizzie Siddal, muse, wife and lover of Dante Gabriel Rossetti, in the BBC Two period drama Desperate Romantics.
In 2011, Manson portrayed Leah in the third series of Misfits and Emma "Whirly" Tyson in the BBC drama Young James Herriot.