1994–1998: Stage When she was 12, Spearritt landed a part in the Lowestoft Players amateur dramatics society's production of
Annie. Thereafter, she successfully auditioned for the
National Youth Music Theatre, and became part of the company. Their first album,
S Club, had a strong 1990s pop sound, similar to many artists of their time. 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. Spearritt led some of the tracks on the groups' albums, such as "Dance Dance Dance" and "Hey Kitty Kitty", the latter which was also a promotional single for
Sunny Delight. S Club 7 won two
BRIT Awards—in 2000 for British breakthrough act and in 2002, for Best British Single. In 2001, the group earned the
Record of the Year award. On 21 April 2003, during a live onstage performance, S Club announced that they were to disband. On 14 November 2014, S Club reunited for a BBC
Children in Need telethon, performing a medley of "S Club Party", "Reach", "Bring It All Back" and "Don't Stop Movin". On 28 April 2015, S Club 7 reissued
Best: The Greatest Hits of S Club 7, with a previously unreleased song, "Rain", as well as "Friday Night" from the
S Club album. In May, S Club 7 performed in UK arenas on the
Bring It All Back 2015 tour. In February 2023, it was announced the group would reform for a second time. In April, a few weeks after the announcement,
Paul Cattermole unexpectedly died. In May, the group confirmed they would be carrying on but Spearritt would not be joining them following Cattermole's death.
2003–present: Acting and television In 2003, she was in
Los Angeles to audition for a role in the film
Agent Cody Banks 2: Destination London, a fact that she revealed at the UK premiere of the film on 24 March 2004 in London. In 2004, Spearritt appeared in horror film
Seed of Chucky. In 2005, she appeared in the
BBC series
Blessed as Sarah. In December 2005, Spearritt appeared in the
West End musical
Snow! The Musical, at London's Sound Theatre. In 2006, it was revealed that Spearritt had landed a lead role in the
ITV series
Primeval. She portrayed the role of
Abby Maitland, a reptile enthusiast who gets mixed up with
time travelling Professor Nick Cutter (
Douglas Henshall) after discovering a species of reptile she had never encountered. Later that year, she made an appearance in ''
Agatha Christie's Marple. In March 2012, Spearritt took over the role of Pauline in One Man, Two Guvnors at the Theatre Royal Haymarket. In December 2015, it was confirmed that Spearritt would star as Mercedes Christie in the BBC medical drama Casualty. Spearritt made her debut on 23 January 2016. In 2017, Spearritt joined the cast of EastEnders as Kandice Taylor, the sister of Karen Taylor (Lorraine Stanley), leaving the show when she became pregnant. In 2024, Spearritt appeared as a contestant on the sixteenth series of Dancing on Ice''. She was paired with
Andy Buchanan and was second to be eliminated. In July 2025, Spearritt was named in the line-up of
Celebrity: SAS Who Dares Wins. ==Personal life==