Thunder is a large head study in oils of a thoroughbred racehorse. I have done a series of paintings influenced by mist and low light, it's a subject that interests me as I try to get away from the more usual views of horse racing.  The atmosphere, expression of the horse and the colours used in the painting suggested the title. The original reference for this painting was a horse called Topofthegame trained by Paul Nicholls, from my own photographs taken at Aintree racecourse.