She made her professional debut in a 2007 episode of Casualty, followed by an appearance in The Bill, a year later.
In 2009, Toussaint-White was offered the part of nurseSyd, a new love interest for Bradley Branning in EastEnders, making her first screen appearance in February 2009. She played this character until her departure in October 2009. She has also appeared in Primeval, and acted in several stage productions, including A Midsummer Night's Dream. 
Following her departure from EastEnders in 2009, Toussaint-White guest starred on the Doctor Who episode "Let's Kill Hitler" which aired on 27 August 2011. In February 2012 she appeared as Mattie Grace in Holby City. In March 2012, it was announced that Toussaint-White would appear opposite her ex-EastEnders co-star Lacey Turner in the ITV2 supernatural drama Switch.