BAJ Banwell concentrated on development of improved rocket motor cases and their materials, and here Aerojet assistance was valuable.
With the next project, Blackcap, BAJ became Design Authority, and its manufacture featured electron beam welding allowing assembly of fully machined components.
Ron Howarth was appointed managing director at Banwell, and supervised withdrawal from several activities considered high-risk such as nuclear engineering and re-focussed on Troy cases for Rapier missiles, sounding rockets, and very large contracts from RPE Westcott on the Chevaline project.
The receivership following the Rolls-Royce crash eventually resulted in 1979 in BAJ being sold to Vickers Ltd, while business continued with production of Hoopoe and Blackcap motors as well as Chevaline.
The new BAJ Ltd operated as five divisions - Rockets, Coatings, Naval Systems, Composites and Stored Energy, and made sales of £13.5 million in its first year, lasting as an independent company until 1987 when it was sold to Meggitt Holdings plc.