In 1986 Ash became the first person to climb all the 3000 feet peaks in Great Britain and Eire in one continuous, solo expedition. A feet that involved climbing over half a million feet of ascent and walking over 1200 miles. It has not been repeated in the intervening 26 years. The event raised £14,000 for the British Leprosy Relief Association. Ash joined the team in 1993 and has served as both team secretary and chairman. for the last ten years Ash has travelled all around the world recording the impacts of climate change and runs the world's only climate change photo agency. His work is sponsored by WWF International.
Ash's images are used by the Met Office, the United Nations Climate Change Program, WWF International as well as appearing in books, newspapers and magazines across the world.
