Painter and teacher, born in London, who studied at Harrow College of Art and Trent Polytechnic, Nottingham, where he graduated in fine art. Moved to Pembrokeshire in 1976. Taught art history part-time for the extra-mural department of The University College of Wales, Aberystwyth, and from the early 1980s earned his living as a painter. Worked in a wide variety of media. Early in his career Tress was an abstract artist in the manner of Ben Nicholson and in Nottingham he had a period working on conceptual and performance themes. In Wales he was strongly influenced by the landscape, producing strongly gestural pictures; also painted widely on the continent and produced a series of nudes in interiors. Showed widely in Wales and England, including RA Business Art Galleries, West Wales Arts Centre in Fishguard, Pelter/Sands Gallery in Bristol, Attic Gallery in Swansea and CASW.