A choir school was established at the church in 1843, which provided music for daily choral services. The choir was widely recognised for its excellence, and choristers sang at the coronations of Edward VII, George V and VI, and Elisabeth II, as well as at Victoria's Jubilees. Among its alumni was Laurence Olivier. The school closed in 1968, at which point the boy's voices were replaced by sopranos. The present-day choir maintains the exacting standards of its predecessors, and is now led by the Organist and Director of Music Paul Brough.
The Choir of All Saints Margaret Street Downside School Boys' Choir, PurleyMichael Hartnett Københavns Drengekor 1. A Ceremony of Carols. Copenhagen Boys' Choir with Enid Simon. Conducted by Benjamin Britten
2. A Boy is Born. Purcell Singers / All Saints Margaret Street Church Choir with Michael Hartnett. Conducted by Benjamin Britten
3. Friday Afternoons. Downside School Boys' Choir (Lodge Downside School). with Viola Tunnard. Conducted by Benjamin Britten.
4. Psalm 150. Downside School Boys' Choir (Lodge Downside School). Conducted by Benjamin Britten