Astley's actual recorded output is quite sparse, consisting of a few singles and albums of the music from "The Saint" and "Danger Man". These were only available in the United States until 1997 when he arranged for CDs to be issued in the UK, where the albums were expensive collectors' items. Other recordings included the soundtrack for "International Detective", a few library records which were only semi-official and a series of albums made by the London Symphony Orchestra which featured his work.