‘Cotterill is clearly rooted in the classical tradition. His palette of colours speaks of the Old Masters: wonderful leaden whites and blues enriched with rich browns and a judicious use of black…. There is something very compelling about the landscapes and buildings he paints. And as it is often not easy to discern the actual site of the subject matter, he is able to make a more general point about changes and man’s impact on the world around him.’
Anne James, The Oxford Times