Five studies for orchestra : : op. 107, no. 1,
- A2/56.
- Ffeil
- 1982.
Ink full score, dated July 1982; and two bound facsimiles, one marked 'Control' (with pencil revisions/annotations), the other 'Conductor'.
Dangos 6 canlyniad
Disgrifiad archifolImprovisations on an old Welsh tune,
- A2/66.
- Ffeil
- [1987].
Photocopy of ink full score, with a few ink and pencil markings.
Variations for orchestra : : op. 31,
- A2/20.
- Ffeil
- 1963.
Ink full score, dated July 1963; facsimile of same and pencil sketch.
Sinfonietta 4 : : op. 72, no. 3,
- A2/43.
- Ffeil
- 1971.
Four bound ink (facsimile) full scores, dated July 1971, comprising a score (OUP) marked 'A', with pencil annotations and amendments; a score (OUP) marked 'B'; an OUP hire copy (marked 'Control'); and another unmarked score; together with a hire copy of the Violin 1 part.
Welsh dances : suite no. 3, op. 123
- A2/62.
- Ffeil
- [1985].
Two ink full scores (photocopies) of the original version; and a photocopy of the ink full score of the revised version, annotated in preparation for publication by University College Cardiff Press.
Welsh dances : : second suite, op. 64,
- A2/34.
- Ffeil
- 1969.
Ink full score (marked 'B'), dated April 1969.