The original score - of which this is a photocopy - is handwritten by Burgess and is inscribed partly in Scottish Gaelic to his son, "Love and lang may your lum reek frae your auld faither. Aug. 9th. 1981". (The inscription translates roughly as "Love and may you never be without fuel for your fire, from your old father.")
See also AB/ARCH/A/MUS/79: File containing fragments of unidentified scores for piano, or solo instrument and piano.