| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Madden & Layman Ltd | 01463325 | 01/10/1992 | Dissolved |
| Madden Contact Lenses Ltd | 01374075 | 17/09/1992 | Dissolved |
| P T C Europe Ltd | 01394954 | 17/09/1992 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ASSOCIATION OF CONTACT LENS MANUFACTURERS LIMITED(THE) | 00738674 | 04/07/1995 | 04/07/1998 | Gold |
| ASSOCIATION OF CONTACT LENS MANUFACTURERS LIMITED(THE) | 00738674 | 04/07/1995 | 26/06/2001 | Gold |
| BAUSCH & LOMB U.K. LIMITED | 00143720 | 09/12/1996 | 31/07/2006 | Gold |
| BRITISH CONTACT LENS ASSOCIATION LIMITED(THE) | 01336067 | 01/05/1998 | 28/05/2002 | Gold |
| Bausch & Lomb Surgical (U.K.) | 02079467 | 15/04/2001 | 31/07/2006 | Dissolved |
| FALCONWOOD MANAGEMENT COMPANY LIMITED | 02906382 | 12/04/2001 | 07/12/2009 | Silver |
| LONDON OPTICAL COMPANY LIMITED | 00338215 | 01/01/2008 | 14/09/2008 | Silver |
| London Optical (Scotland) Ltd | 00886518 | 01/01/2008 | 14/09/2008 | Dissolved |
| London Williamson Ltd | 00915889 | 01/01/2008 | 14/09/2008 | Dissolved |
| P.G. Allder Ltd | 04196636 | 01/01/2008 | 14/09/2008 | Dissolved |
| RODENSTOCK (U.K.) LIMITED | 00266467 | 01/01/2008 | 14/09/2008 | Silver |
| ULTRAVISION INTERNATIONAL LIMITED | 01408851 | 04/09/2006 | 06/11/2007 | Amber |