David Fleming (2 January 1940 – 29 November 2010) was an economist, cultural historian and writer on environmental issues, based in London. He was among the first to reveal the possibility of peak oil's approach and invented the influential TEQs system, designed to address this and climate change. He was also a pioneer of post-growth economics, and a significant figure in the development of the UK Green Party, the Transition Towns movement and the New Economics Foundation, as well as a Chairman of the Soil Association. Alongside these roles, his wide-ranging independent analysis culminated in two critically acclaimed books, Lean Logic and Surviving the Future (published posthumously in 2016). A feature film about his perspective and legacy, The Sequel: What Will Follow Our Troubled Civilisation?, was released in 2020, directed by Peter William Armstrong. Family background and early life He was born in Chiddingfold, Surrey, to Norman Bell Beatie Fleming, a Harley Street eye surgeon, and Joan Margaret Fleming, an award-winning crime writer. He and his three sisters were thus the grandchildren of the Scottish historian and antiquary David Hay Fleming. He attended Oundle School before reading Modern History at Trinity College, University of Oxford from 1959 to 1962. He then worked in manufacturing (textiles), marketing (detergents), advertising and financial public relations, before earning an MBA from Cranfield University in 1968. Biography He was the Ecology (Green) Party's economics spokesman and press secretary between 1977 and 1980 (the party office at that time being his flat in Hampstead). From 1977 to 1995, he worked as an independent consultant in environmental policy and business strategy for the financial services industry, and in 1980 began studies in economics at Birkbeck College, University of London, completing an MSc in 1982 and a PhD on the economics of the market for positional goods in 1988. In this time, he also helped to organise The Other Economic Summit (TOES), first held in 1984 - a regular counter-summit to the annual G7 summits. TOES is also noted as the birthplace of the New Economics Foundation, an organisation with which Fleming retained close links. Also in 1984, he became Honorary Treasurer of the Soil Association, and then was appointed that organisation's Chairman from 1988 to 1991. In 1995, his manual on the formation and management of investment funds in the Former Soviet Union was published. From 1995 until his death, he wrote and lectured widely on the