The English Chamber Orchestra is considered one of the most distinguished chamber orchestras in the world. Similar in musical philosophy and organization to the Academy of St. Martin-in-the-Fields, the ensemble is financially self-supporting and has no permanent home venue. The orchestra presents an annual concert series in London and also tours internationally. Over its history, the ensemble has expanded its repertoire to include a wide range of chamber music from various musical periods and is flexible in size, ranging from 24 to 38 musicians.

The English Chamber Orchestra was formed in 1948 by Arnold Goldsborough to perform Baroque music. Originally named the Goldsborough Orchestra, the ensemble changed its name to the English Chamber Orchestra (ECO) in 1960 in accordance with the needs of the group's growing reputation. At the same time, the "English Chamber Orchestra and Music Society" charity was formed as the promotion arm of the organization. Like many other chamber orchestras, the ECO employs no full-time musicians but hires its players on a contract basis. This allows the orchestra to be flexible in size and structure according to the needs of its repertoire and concert venues and also gives the musicians the opportunity to work in a variety of other situations. The freedom this provides is key to the fresh approach this orchestra takes in its performances through its use of a system of co-principal groupings of players. Under this system, two principal players share each chair and are contracted to play a set number of performances in a given season.

The ECO has performed for numerous important occasions, including a command performance before Queen Elizabeth II at the Queen Elizabeth Hall inaugural concert in 1967. Other performances of note are the first color television recording of music for the BBC and the wedding of Prince Charles and Princess Diana of Wales in 1981. The ensemble has been associated with the music of Benjamin Britten since it became the resident orchestra at the 1961 Aldeburgh Festival. The ECO has toured extensively, including tours throughout Europe, the U.S., and China.

Until 1985, the orchestra chose to work without a principal conductor, instead, inviting a series of talented guest artists to lead the ensemble. The ECO has a reputation for giving young conductors important opportunities. Among those who have benefited from this policy are Sir Colin Davis, Daniel Barenboim, and Pinchas Zukerman. During the orchestra's Silver Anniversary celebration in 1985, it was announced that Jeffrey Tate had been chosen to fill the newly created position of principal conductor, and in 2000 he was succeeded by Ralf Gothóni. Paul Watkins has also served as music director, and Roy Goodman has served as the orchestra's principal guest conductor.

The ECO can be heard on over 800 recordings on all of the major labels, including a significant number on EMI, Deutsche Grammophon, Sony, Decca, and Philips. Among the highlights for the ECO are three complete Mozart piano concerto cycles, featuring Daniel Barenboim on EMI Classics, Mitsuko Uchida on Philips, and Murray Perahia on Sony Classical. In 2019, the ECO was lead from the keyboard by Benjamin Hochman in a recording of Mozart's Piano Concertos Nos. 17 24, on Avie.

Tremendously versatile and musically polished, the English Chamber Orchestra is fully deserving of its reputation as one of the finest chamber orchestras in the world. ~ Corie Stanton Root, Rovi