Myles was born in Ystradgynlais, south west Powys. She attended Ysgol Maes Y Dderwen, where she was in the same class as fellow actor Steve Meo. She grew up with a strong interest in boxing, although she gave up the sport after breaking her knuckles. After training as an actress and gaining a Bachelor of Arts degree in acting at the Royal Welsh College of Music & Drama in Cardiff in 2000, Myles moved to London. Filming Torchwood saw the actress relocate to the Hollywood Hills with her family, living “literally underneath the Hollywood sign”. Myles has described California as the “land of dreams”, and her experience filming the fourth series of Torchwood as the best year of her life, adding that she would love to spend more time there as an actress if possible.
Myles took on the central role of Ceri Owen (Née Lewis) in the BBC Wales drama Belonging. Her longest role to date, Myles played Ceri from the series’ first episode through to its final series in 2008; returning for a one off special in 2009. In 2001, Myles undertook a role in the television film Score and the TV mini-series Tales from Pleasure Beach. From 2003, Myles based herself in Stratford upon Avon, initially playing Lavinia in the Royal Shakespeare Company production of Titus Andronicus, for which she received the Sunday Times Ian Charleson award in 2004. She has also played Bianca in The Taming of The Shrew and in 2005, appeared opposite Michael Gambon in Henry IV, Part I and II at the National Theatre. Myles appeared in the ITV drama Colditz in 2005.
She took a supporting role in the Doctor Who episode “The Unquiet Dead”, playing servant girl Gwyneth. This brought her to the attention of Lead Writer Russell T Davies, who would progress to create and produce Torchwood. Considering her to be “one of Wales’ best-kept secrets”, Davies wrote the role of Gwen Cooper in Torchwood specifically for Myles. Speaking on her casting, Myles stated that having the part written for her was like having her “own personal oscar”. An audience surrogate Myles characterises Gwen as Torchwood’s “Social Worker” who “can run and fight and stand in her own corner and win.” Her role in Torchwood also led to Myles making a second appearance in Doctor Who, for its Fourth series’ finalé, alongside Torchwood co-stars John Barrowman and Gareth David-Lloyd. Myles has appeared in every episode of Torchwood to date and returned for Torchwood’s Fourth series; Torchwood: Miracle Day airing on BBC One and US premium television network Starz.
Myles also appeared in the first episode of Merlin, called “The Dragon’s Call” where she played Lady Helen of Mora and Mary Collins, a witch who impersonated her. She portrayed the character of Maggy Plornish in Andrew Davies’ 2008 adaptation of Little Dorrit, which later went on to win seven Emmy awards. Early 2008 also saw the actress host a radio show centred around Welsh boxer Joe Calzaghe and narrate a short story, Sorry for the Loss by Bridget Keehan, both airing on BBC Radio Wales.
2009 saw her star in the award winning independent Welsh film A Bit of Tom Jones as well as the one-off Drama, Framed, for BBC Wales, alongside Trevor Eve. In July 2010, Myles announced she would appear in an original BBC Cymru Wales TV series, Baker Boys, co-written by Helen Raynor and Gary Owen and airing in early 2011. 2011 also saw Myles provide the voice of the Dalish elf Merrill in the Bioware video game Dragon Age 2. In July 2011, to coincide with Torchwood’s fourth series Myles presented part of a BBC Wales Documentary entitled Wales and Hollywood, which featured the actress travelling to the Hollywood Walk of Fame to find the Welsh talent honoured there.
In 2012 Myles returned to the stage in Zach Braff’s play All New People, which will run for 10 weeks at the West End’s Duke of York’s Theatre following runs at the Manchester Opera House (8–11 February 2012) and the King’s Theatre in Glasgow (14–18 February).
- Retro Recap: Torchwood, Episode 1.01, “Everything Changes” (persephonemagazine.com)
- Myles humbled by major State of Origin award in 2012 (3news.co.nz)
- TV’s Best Bad Boy Tourney Day 2: Leverage Vs. Supernatural! Firefly Vs. Torchwood! (tvline.com)
- Dr Who Christmas Special 2011 & Matt Smith in Cardiff (visitwales.co.uk)
- Cardiff news: BBC Wales shortlists four Cardiff sites for new headquarters (walesonline.co.uk)
- Showbiz: Torchwood star Ianto flees sci-fi event to ensure baby born in Wales (walesonline.co.uk)
- Iron Production Returns To Welsh Valleys, Wales (visitwales.co.uk)