She appeared as Tina in the 1997 production of The Fix, and as Mimi in the 1998 version of the musical Rent for which she was a 1999 Olivier Award nominee.
[6] Cummings played the original part of Tina in See Jane Run which premiered at London's Donmar Warehouse in 1997.
[11] She is a co-creator of The Bisley Boy, a gothic musical fantasy that follows the private life of Bram Stoker, which was to run at the Ritz Theatre from September 16 to October 2 in 2022.
[12][13] Cummings provided the voice for Submerge in the 2009 sci-fi film, Ghost Machine which was directed by Chris Hartwill.
[14] She played the role of Deputy Elen Rios in The Descent: Part 2, a horror film about cave crawling creatures.
[20] In 2020, Cummings was a member of the band OffWorld which was made up of Richard Archer, herself, Wolsey White, Smiley Barnard and Dale Davis.