This illustrated work covers the stories of five British engineering companies that produced successful ranges of agricultural, earthmoving or construction machinery. County, Doe, Chaseside, Muir-Hill, Matbro and Bray all made extensive use of the Ford tractor skid unit as a basis for their machines and they pioneered the development of the four-wheel drive agricultural tractor in Britain. Stuart Gibbard gives details of all the main models and machines of these manufacturers. He chronicles the fortunes of the firms from the beginning of the 20th century to the present day and discusses many of the personalities involved.