Lara was born and raised in Essex, UK. She studied drama with the National Youth Music Theatre from 1994 to 1998 and went on to gain a BA Honours degree in Theatre.

Lara's extensive theatre career led her to gain a Laurence Olivier Award nomination for her portrayal of "Lucille Frank" in Rob Ashford's production of "Parade" at The Donmar Warehouse. She was invited to re-create the role at The Mark Taper Forum in Los Angeles, opposite T.R. Knight (Grey's Anatomy (2005)), gaining much critical praise.

Lara made her screen debut in 2008, in the BBC prime-time show, Robin Hood (2006), playing "Isabella of Gisbourne". The show is a huge international success and is airing on BBC America, Saturday evening at 8/9c. She has just completed filming the new Peter Morgan (Frost/Nixon (2008), Kraliçe (2006)) movie, The Special Relationship (2010), starring Michael Sheen and Dennis Quaid.