[citation needed] It is believed that the countryside around Abergavenny inspired his enduring relationship with art and landscape.
[3][4] The major body of Wall's work was entitled "Visionary Landscapes" and he was highlighted as "a true artist on the verge, perhaps of visions so transitive that they become revelations" by the Yorkshire Post.
His 1985 exhibition at the Warminster Arts Centre (organised by a former pupil, John Henshaw) was nearly a sell-out.
[citation needed] One of his largest works in that exhibition (6' × 4') was sold to the local Warminster Hospital where it still[when?]
Wall's last exhibition was held jointly with a former pupil of Cleveland College of Art and Design, Mackenzie Thorpe at St. Martin in the Fields Gallery, London, 28 June – 11 July 1992.