LAND/SEA/SKY marked over ten years of Stewart’s work in the landscape; expansive, minimal squares of horizon, water and sky, that often referenced romantic or abstract expressionist painting. Describing these photographs, writer Robert Macfarlane noted  “There's something original and ambitious at work here; a shard-like hard-cutting between image and place...  born of somewhere between muteness and confusion. Sometimes it's bewildering -- but then that's true of the places Stewart is fascinated by as well.” More recently Stewart explores his family’s history in The Killing Time, a personal pilgrimage to Galloway revisiting places of ancestral significance around the Solway Firth, where religious conflict in the 17th century left its mark. '[Stewart’s] work evokes a haunting beauty and the inseparable link between human history and nature...’ (The Guardian, September 15th, 2025).