In 1978, whilst still in architectural practice, David held an exhibition of his work in Worcester City Art Gallery which was successful enough for him to consider painting full-time. In July 2025, in gratitude for this encouragement, he donated twenty watercolour drawings, one screen-print and two small etchings to the gallery’s permanent collection.

These works represent how David’s techniques have developed since 1978, and were exhibited at the newly refurbished City Gallery, Worcester, from January to May 2026. In association with the exhibition David delivered several talks at the Victoria Institute, discussing the works in the exhibition and the way that they were made.