| Us | 2019 | ballet in one act | 30 | Keaton Henson |
| O Come, Let Us Sing Unto The Lord | 1983 | SATB chorus and piano/organ (or brass quintet) | 3 | Morten Lauridsen |
| Urgent | 2018 | piano and string orchestra | 8 | Keaton Henson |
| Uh huh, Yeah | 2019 | voice, clarinet, harp, double bass | 6 | Oliver Leith |
| U-Tangia-Na | 1991 | alto-trombone and organ | 5 | Anders Hillborg |
| Come unto these yellow sands | 2012 | voice and piano | 2 | Thomas Adès, Henry Purcell |
| U-Tangia-Na | 1991 | alto-trombone and tape | 5 | Anders Hillborg |
| Duty Clear Before Us, A | 2005 | chamber ensemble of 6 players | 4 | Matthew Hindson |
| Fanfare for Utopia | 1995 | chamber orchestra | 1 | Jonathan Harvey |
| Under Hamelin Hill | 1992 | chamber organ (1-3 players) | 8 | Thomas Adès |
| Unconditional Love | 2021 | SATB choir, piano, organ and brass ensemble of 7 players | 36 | Howard Goodall |
| As I Sat Under a Holly Tree | 1967 | partsong for 3 unaccompanied equal voices | 3 | Imogen Holst |
| Close Up (guitar) | 1996 | solo guitar and optional tape | 1 | Anders Hillborg |
| The stars above us all | 2012 | orchestra | 5 | Matthew Hindson |
| Lullaby for the Unsleeping | 1982 | medium voice and piano | 5 | Jonathan Harvey |
| Close Up (clarinet) | 1991 | solo clarinet and optional tape | 1 | Anders Hillborg |
| Ricercare una melodia (oboe) | 1984 | oboe and electronics | 6 | Jonathan Harvey |
| Close Ups (Närbilder) | 1991 | flute solo | 7 | Anders Hillborg |
| Ricercare una melodia (cello) | 1984 | cello and electronics | 6 | Jonathan Harvey |
| Ricercare una melodia (viola) | 2003 | viola and electronics | 6 | Jonathan Harvey |
| Ricercare una Melodia (trumpet) | 1984 | Trumpet and electronics (or tape-delay system) | 6 | Jonathan Harvey |
| Ricercare una melodia (flute) | 1984 | flute and electronics | 6 | Jonathan Harvey |
| It came upon the midnight clear | 2016 | tenor and piano | 4 | Howard Goodall |
| Ricercare una melodia (trombone) | 1984 | trombone and electronics | 6 | Jonathan Harvey |