Sarah Cattley is an award-winning composer based near Cambridge, where she studied Music at Newnham College, Cambridge. Her composition supervisors included Cheryl Frances-Hoad and Joseph Phibbs. Her music has been performed in France, Sweden, and Ireland as well as across the U.K. in venues such as Saffron Hall, Buckfast Abbey, and Ely Cathedral.

Sarah was Caritas Chamber Choir's Composer of the Year 2017-18, after winning their inaugural composition competition. During the year she wrote them four new works, and her music is available on their two CDs.

In 2019, the London Festival of Contemporary Church Music commissioned Sarah to write a set of Preces and Responses, which were premiered during the festival evensong, broadcast live on BBC Radio 3 and conducted by Christopher Batchelor. In the same year, Sarah was joint winner of the National Centre for Early Music's Young Composer Award, with her piece Dream Fever for bass viol and electronics. The piece was recorded for Radio 3's Early Music Show by Liam Byrne.

Sarah is also an active choral soprano and director of a community choir in Essex. Much of her choral music is published by MazeMusic.