Ferranti-Syseca was formed when a susidiary of Thomson-CSF known as Syseca bought the computer section of Ferranti International plc, Ferranti International Industrial Systems. Ferranti had gone into administration in 1994.

In July of 1996 Ferranti-Syseca became known as Syseca Ltd, a name used until 2001, when the company became Thales Information Systems Ltd. The company was dissolved in September 2018