Sinclair BASIC was created in 1979.
Your Sinclair was created in 1983.
Sinclair Scientific was created in 1974.
Sinclair Sovereign was created in 1976.
Sinclair Research was created in 1973.
Sinclair Cambridge was created in 1973.
Sinclair Baronets was created in 1786.
Sinclair Breweries was created in 1988.
Grayson Sinclair was created in 2006.
Sinclair User was created in 1982.
Sinclair Radionics was created in 1961.
Sinclair Oxford was created in 1975.
Sinclair Broadcast Group was created in 1971.