Sophie trained at the Royal Welsh College of Music and Drama.

Previous theatre credits include: Mum (Soho Theatre/Theatre Royal Plymouth); Masks and Faces (Finborough Theatre); Herding Cats (Soho Theatre); Living Newspaper (Royal Court Theatre), Pops (Young Vic and Roxy Assembly – The Stage Award for Outstanding Performance); Wolfie (Theatre503); Blue (Chapter Theatre); Close Quarters (Sheffield Crucible); No One Will Tell Me How to Start a Revolution (Hampstead Theatre); The Divide, Pagans (The Old Vic); Low Level Panic (Orange Tree Theatre); 2066 (Almeida Theatre); Blackbird (The Other Room Theatre, Wales Theatre Awards Best Female Performance); Insignificance (Theatr Clwyd); Iphigenia in Splott  (National Theatre/Theater 59E59 NYC/The Sherman/Edinburgh Fringe Festival and International Tour, The Stage Award for Acting Excellence, Wales Theatre Award for Best Female Performance, Evening Standard Award nomination for Best Actress, Drama Desk Award nomination for Outstanding Solo Performance); Romeo and Juliet (The Sherman Theatre); Under Milk Wood (Theatr Clwyd Cymru); The Shape of Things; Tis a Pity She’s a Whore; See How They Run (Theatre by the Lake); Romeo and Juliet (The Sam Wanamaker Festival).

Television credits include: The Pact, Bang series 2, Call the Midwife, The Left Behind, The Missing 2 (BBC).