From Graces Guide
Scottish Aviation was a Scottish aircraft manufacturer, based at Prestwick Airport in South Ayrshire.
1936 Name changed.
1938 Originally a flying school operator it took on maintenance work.
The factory building of Scottish Aviation, which still exists today, was formerly the Palace of Engineering at the 1938 Empire Exhibition in Bellahouston Park, Glasgow. The building was dismantled from its Glasgow site and reconstructed.
1939 See Aircraft Industry Suppliers
WWII Scottish Aviation was heavily involved in aircraft fitting for the war effort. This included maintenance and conversion of the Consolidated Liberator bomber.
Post war the company built robust military STOL utility aircraft such as the Pioneer and larger Twin Pioneer.
1957 Announced the formation of a new department to co-ordinate sales, servicing and flight operations with Mr N. J. Capper as manager. Mr I. C. Read, for many years in charge of sales and service matters, was appointed sales manager, and Mr J. Logan became service manager.
1961 Aircraft engineers and manufacturers, producing the "Twin Pioneer". 3,000 employees. 
1966 Acquired by Cammell, Laird and Co
1969 Built Bulldog trainers after the demise of their original manufacturer, Beagle Aircraft Limited.
1970 After a financial crisis, the parent company was renamed as Laird Group; it also held 50 percent of the shipbuilding business (the government took on the other 50 percent), as well as the other activities of the former company.
1977 Scottish Aviation merged with the British Aircraft Corporation (BAC), Hawker Siddeley Aviation, and Hawker Siddeley Dynamics to form British Aerospace. Much of the former Scottish Aviation assets now belong to Spirit AeroSystems.
Sources of Information
- Aeroplane and Astronautical Magazine 1957/02/08
- 1961 Dun and Bradstreet KBE
-  Wikipedia