Sims’s earlier sculpture and installations responded to a diverse set of subjects and themes, from mass media saturation and the subsequent filtering of experience by information technology, to colonial histories, issues of displacement and meteorological phenomena. More recently, his work reflects concerns with the proliferation of media transmissions repeatedly depicting violent conflict.

His sculpture in timber of the late 1980s, much of it reflecting new encounters with another country, prefigured later directions with sound and video where his exploration of the landscape genre readily included urban motifs and sites of collective trauma. His broadcast works for radio and screen installations are driven by considerations of spatiality as being equally a landscape of mind as of geography and are frequently structured around matters of time and silence.

He utilises an extensive repertoire of methods and materials to produce works that can be stringently conceptual in organisation or, otherwise structured around the primacy of tactile reality. His work has been shown in historic sites, civic locations, religious spaces, and contemporary galleries with regular exhibition projects spanning 30 years. After first exhibiting in London, Sims moved to Sydney in 1985 where he now lives and works. The recipient of multiple awards and international residences, he is Senior Lecturer at the College of Fine Arts, the University of New South Wales.