Coxon trained at Leeds School of Art and the Royal College of Art, London, where fellow students included his future wife, Edna Ginesi and Henry Moore. Nature has been the enduring subject of his work. Early paintings focused on landscape. Later, his work became less representational and paintings such as 'Blue Bird' depict natural forms dancing in settings of air and water. Using his own drawings from nature he would then, as he wrote in 1968, 'face the problem of contriving the painting in terms of colour and within the battleground of the area of the canvas... In short I am motivated by these beginnings to make a disciplined (but not essentially concordant) marriage between colour and form'.