Non-specialist truck production for general haulage resumed in 1974 after a break of two years. New rear-engined single-decker and double-decker buses were announced in August 1977 after a bus-building break of eleven years. At the time of the announcement the workforce was 875 and Dennis Motors remained Guildford's largest employer. The first new bus was the Dominator with a double-deck body followed by more new buses named Jubilant, Dorchester, Lancet and Falcon. The Falcon chassis took either single or double-deck bodies. All these names belonged to previous successful Dennis models. A new range of fire appliances, the R series, went into production in 1976. A single specialist fire engine chassis on which modular body units could be mounted it was complementary to the existing range. On 31 December 1977 Dennis Motors Limited was renamed Hestair Dennis Limited. Hestair Dennis 1977 to 1985 The former Dennis Motors business was renamed Hestair Dennis by August 1977. A Queen's Award for Export was received in 1978. In February 1980 John Smith, the managing director of Hestair Dennis, was jailed for life in Baghdad for paying "huge amounts for commercial deals and secret information". Four of the Iraqis with him were hanged. He was not released until February 1988. Phoenix was added as a brand name to all Dennis Eagle refuse collectors during 1978. The Delta 1600 series trucks were launched, middleweight 16 tonne vehicles for tipper and haulage applications. In February 1983, Hestair Dennis purchased Duple Coachbuilders. Between the two Hestair could produce complete vehicles with the new Duple-developed integrated body-chassis units. Duple owned Duple Metsec in Tipton, suppliers of bus body kits for assembly overseas. Hestair Duple 425 was displayed in October 1984 and in production a year later powered by Cummins engines. On 10 December 1985 Hestair Dennis Limited was renamed Dennis Specialist Vehicles Limited and again on 3 February 1986 to Hestair Specialist Vehicles Limited. Special-vehicle division Production moves to Warwick, Worcester, Blackpool In late 1985 a new 125,000 square foot Dennis Eagle plant on the Heathcote Industrial Estate in Warwick opened, taking over the building of Dennis municipal vehicle chassis and the matching Eagle bodies. Construction of chassis for buses and coaches as well as fire appliances remained at Guildford but that factory lost 600 jobs. Building of fire appliance bodies was moved to Carmichael Fire in Worcester and all cabs to Duple at Blackpool. The re-organisation cost around