[2] Spearritt is known for playing the role of Abby Maitland in the British science-fiction drama Primeval (2007–2011), Mercedes Christie in Casualty (2016) and Kandice Taylor in EastEnders (2017–2018).

When she was 12, Spearritt landed a part in the Lowestoft Players amateur dramatics society's production of Annie.

[1] In 1998, she was cast in the television film The Cater Street Hangman,[1] playing the role of a maid who gets murdered.

However, through the course of their career, their musical approach changed to a more dance and R&B sound which is heard mostly in their final album, Seeing Double.

[13] In March 2012, Spearritt took over the role of Pauline in One Man, Two Guvnors at the Theatre Royal Haymarket.

[14] In December 2015, it was confirmed that Spearritt would star as Mercedes Christie in the BBC medical drama Casualty.

[18] Spearritt and Paul Cattermole met in 1994 when both were members of the National Youth Music Theatre.

[19] In 2006 Spearritt started dating Andrew-Lee Potts, her co-star on the series Primeval; the couple were engaged from 2008 until 2013.

[22] In December 2020, Spearritt announced the birth of her second daughter, both with her partner Adam Thomas.