| Lance Baker | Symphonic Overture 'ABFE' | 1973 | Orch. (with/out solo) |
| Ernest Baker | Two Poems | | Song (Voice w/wo 1 instr) |
| Ernest Baker | Soliloquy | | Solo |
| Ernest Baker | Night-Theme | | Solo |
| Ernest Baker | Night Theme | | Duo |
| Ernest Baker | Night Theme | | Duo |
| William Baines | Piano Sonata no.2 | | Solo |
| Francis Baines | Symphony no. 2 | 1957 | Orch. (with/out solo) |
| Francis Baines | Symphony no. 1 | 1953 | Orch. (with/out solo) |
| Simon Bainbridge | Interlude Music | 1973 | Chamber (3 - 6 players) |
| Malcolm Arnold | Two Bagatelles | 1947 | Solo |
| Andrew Arvin | Heart of London, The | | Orch. (with/out solo) |
| Richard Ascough | Hania | | Solo |
| Richard Ascough | Harmonious Keyboards | 1971 | Keyboard (2+ players) |
| Robert Ashfield | First Nowell, The | | Unaccomp. Choral |
| Lee Ashton | No title | | |
| John Aspinwall | Christmas Carol | | Accompanied Choral |
| Richard Attree | City At Night | | Electronic |
| Richard Attree | Dun-Dun | | Electronic |
| Richard Austin | Come To Your Heaven | | Unaccomp. Choral |
| Richard Austin | Lute Book Lullaby | | Unaccomp. Choral |
| Richard Austin | Magnificat and Nunc Dimittis | | Unaccomp. Choral |
| Richard R. Austin | String Trio | | Chamber (3 - 6 players) |
| Peter Aviss | Introduction and Allegro | | Duo |
| Lydia Aylott | English Mass, An | | Unaccomp. Choral |
| Lydia Aylott | Little Suite | | Chamber (3 - 6 players) |
| Lydia Aylott | Piano Trio | | Chamber (3 - 6 players) |
| Lydia Aylott | Three French Songs | 1975 | Song (Voice w/wo 1 instr) |
| Malcolm Arnold | Fantasy for audience and orchestra | 1970 | Orch. (with/out solo) |
| Malcolm Arnold | English Dances Set 1 | 1950 | Solo |
