Maxishaw Limited | 7th December 1992 to 24th December 1992 |
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Advanced Allergy Technologies Limited | 24th December 1992 to 12th November 1998 |
Alprotec Limited | 12th November 1998 to 16th March 1999 |
Advanced Allergy Technologies Limited | 16th March 1999 to 19th July 2022 |