Billie's biggest success to date has been her performances on stage, which have seen her win several prestigious 'Best Actress' awards. Billie debuted on stage in 2007 playing Ann in Christopher Hampton's Treats that saw a string of sold out dates at the Garrick Theatre, as well as a nomination for 'Best Actress' at the Evening Standard Awards.

 

2011 saw Billie play the part of Carly in Neil LaBute's Reasons to Be Pretty at the Almeida Theatre, which not only went on to become a four-month advance sell out but also garnered her several five-star reviews and a nomination for 'Best Actress' at the What's On Stage Awards.

 

This was still not to be Billie's best yet though. In 2012 she played the part of Connie, opposite Jonjo O'Neill, in the Headlong and National Theatre's co-production of The Effect, scripted by fellow friend and 'ENRON' writer, Lucy Prebble. The production was a massive success selling out every date months in advance, despite an extra five weeks worth of dates being added. A petition was started to have the show extended even further, and shown as part of the National Theatre Live platform – supported by The Telegraph. The show very quickly became the most critically acclaimed new play of the season, and then the year. It received a constant stream of five-star reviews all focusing primarily on Billie's ‘Superb’ (The Telegraph), 'Tour-de-Force' (BBC Front Row) and 'Extraordinary' (The Guardian) performance. But her success didn't stop there, in addition to this, Billie was nominated for 'Best Actress' at the What's On Stage Awards, Evening Standard Awards, Critic's Circle Awards and the highest honour in British theatre; the Olivier Awards where she went up against Helen Mirren.

 

Next, Billie went on to star in Great Britain, a top secret production by the National Theatre running in the summer of 2014. The show, based on the then-recent phone hacking scandal, opened to a stream of critical acclaim and positive word of mouth, hailing Billie's 'Stunning' (BBC Front Row) and 'Show-Stealing' (BBC 4) performance. Just days after opening, the show was confirmed for a west-end transfer with award beginning to pile up. Billie was, once again, nominated for 'Best Actress' at the London Evening Standard Awards and won Best Actress at the What's On Stage Theatre Awards for her performance.

 

In 2016, Billie stunned audiences and critics once again. Playing the part of Her in Yerma, she stormed her way back to the West End picking a stream of five-star reviews along the way. Critics hailed her as 'Emotionally Obliterating' (Metro), 'Breathtaking' (The Observer), 'Astonishing' (Time Out), 'Ferocious' (Evening Standard), 'Earth-quaking' (The Guardian) and 'Absolutely Searing' (The Financial Times). She picked up Best Actress at the Evening Standard, Broadway UK and Critics Circle Theatre Awards, and is currently nominated for Best Actress at the What's On Stage theatre awards.

 

Due to phenomenal demand, Billie re-joined with the original cast of Yerma for five weeks in the summer of 2017. The run sold out within minutes of going on sale.