Terminal Display Systems Limited | 15th April 1977 to 24th October 1989 |
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TDS Digitizers Limited | 24th October 1989 to 10th June 1992 |
TDS Cad-Graphics Ltd | 10th June 1992 to 7th April 2004 |
TDS Promethean Limited | 7th April 2004 to 7th October 2004 |
Promethean Technologies Group Ltd | 7th October 2004 to 29th December 2006 |
Promethean Limited | 29th December 2006 to current |