Guy farms 350 hectares at St Osyth in Essex, mainly growing quality wheat. The farm is notable in that it is officially the driest spot in the British Isles, is mainly below sea level protected by two miles of sea defence walls, and adjoins areas of international environmental importance. The farm business is well diversified including agri-tourist attractions such as The Blue Garden Cafe.
He has held a number of positions in his off farm career including Deputy President of the NFU ( 2014-2020), Vice Chair of the COPA plant health committee in Brussels and has served on the boards of FACE (Farming and Countryside Education), HGCA (Home Grown Cereals Authority) and Landskills New Entrants Committee. He is a founder of the Essex Schools Food and Farming Day. He is currently chair of the Red Tractor Crops Board.
Guy is a Fellow of the Royal Agricultural Society and recipient of an Honorary Doctorate for services to agriculture from Essex University.