Olivia was nominated for Best Female Performance in a Comedy Drama for the 2015 BAFTAs for her performance in BBC2's REV. In 2014, she was awarded the BAFTA for Best Leading Actress as DS Ellie Miller in BROADCHURCH.
She was a double award winner at the 2013 BAFTAs for Female Performance in a Comedy Programme for her performance as Sally Owen in TWENTY TWELVE, and for Supporting Actress for her portrayal of Sue in ACCUSED.
She recently starred as DS Ellie Miller in ITV1's hit drama BROADCHURCH and Susan Spencer in THE SUSPICIONS OF MR WHICHER II, also seen on ITV1.
Recent feature film appearances include LONDON ROAD, THE LOBSTER, TYRANNOSAUR directed by Paddy Considine, for which she won a World Cinema Special Jury Prize for breakout performance at Sundance, and best actress awards at the British International Film Awards and Evening Standard British Film Awards, and THE IRON LADY with Meryl Streep directed by Phyllida Lloyd.
On stage Olivia most recently appeared in the West End at the Noel Coward Theatre as Myra Arundel in Howard Davies's production of HAY FEVER.
Upcoming credits include The Night Manager for AMC.
She trained at Bristol Old Vic Theatre School.