Britten Sinfonia is a chamber orchestra ensemble based in Cambridge, UK. It was created in 1992, following an initiative from Eastern Arts and a number of key figures including Nicholas Cleobury, who recognised the need for an orchestra in the East of England. It is a flexible ensemble composed of chamber musicians in Europe. The players are freelance musicians who are employed on a project-by-project basis and the ensemble performs around 70 concerts per year and works with hundreds of people in the communities where the orchestra is resident.
It is a not-for-profit organisation, and a registered charity.