Tarbet was born and lived her early years in Brighton, East Sussex,[1] and attended Greenfields School in Forest Row.
[5] From there, Tarbet was working in telesales attempting to save enough money to apply for drama school, when she successfully auditioned at the Royal Court Theatre, igniting her acting career.
[3] Tarbet made her professional stage debut in 2010 as Delilah Evans in the Anya Reiss play Spur of the Moment at the Royal Court Theatre,[6][7][2] for which, she was shortlisted for the Evening Standard Outstanding Newcomer in 2010.
[12] In 2015, Tarbet was nominated for an Offie award for best female for her performance the play, The Edge of our Bodies at the Gate Theatre (London).
[14] The same year Tarbet played sixteen year-old Hannah Markham in the BBC drama TV series Rellik.