formerly the Heston Aircraft Co
1966 Announces 10% Scrip issue [1]
1971 Manufacturing Sherpa fork lift trucks at Heston [2]
1971 Acquired Johnsons-H.P.L.
1972 Sold Sidney R. Littlejohn to Forward Technology[3]
1972 Bought Dennis Brothers. The company already owned Yorkshire Vehicles and Eagle Engineering Co
1972 Sold the Mercury Truck and Tractor and Mercury Airfield Equipment businesses, acquired with Dennis, to Marshalls (Halifax)[4]
1977 Acquired P. B. Bettinson and Co and Root Harvesters; sold Johnsons of Hendon and Mulden Zoon[5]
1983 Acquired Duple Motor Bodies
1989 BET acquired Hestair, whose businesses included Atlas personnel services and consumer products such as push chairs[6]
1989 Management buyout of the engineering businesses, including Dennis, was called Trinity Holdings[7][8]