Using a more logical approach to regroup the wide spread of airline activities into four discrete units concluded the BUA group's reorganisation and revitalisation. As a result, BUA became the group's frontline all-jet operator based at Gatwick; BUIA's CIMAS division provided all "second-level" scheduled services from several regional bases and standardised its fleet on the Herald turboprop, while its Morton Air Services division offered "third-level" air taxi, charter and feeder services; and Bristow Helicopters assumed sole responsibility for all helicopter operations.