SEED Ensemble is a British jazz ensemble based in London. Formed in 2016, the 10-piece group is led by the saxophonist Cassie Kinoshi and includes the musicians Sheila Maurice-Grey, Shirley Tetteh, Theon Cross, Miguel Gorodi, Chelsea Carmichael, Joe Bristow, Deschanel Gordon, Rio Kai and Patrick Boyle. The ensemble has been identified as part of a "new wave of British jazz". In 2019, their debut studio album, Driftglass, was released through the label Jazz re:freshed. The recording was nominated for the Mercury Music Prize that same year, which resulted in an 85% increase in sales and a 102% rise in Spotify streams. The work was named after the 1971 science-fiction story collection by Samuel R. Delany and received positive critical reviews from publications including The Guardian and Clash Magazine.