Clive Sinclair
Macmillan first entered the computer software market in 1983 when it jointly produced a range of educational software with Sinclair Research for use with the ZX Spectrum home computer. The venture was launched by Clive Sinclair and Harold Macmillan who proclaimed the software to be a "technological advance". The "Learn To Read" (based on Macmillan's "Gay Way" primary school reading scheme) and "Science Horizons" titles developed by Five Ways Software