| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BRITISH COD LIVER OILS LIMITED | 00535007 | 07/08/2013 | Dissolved |
| CELLIANCE LIMITED | SC120833 | 01/02/2013 | Dissolved |
| PHILLIPS YEAST PRODUCTS LIMITED | 00245336 | 07/08/2013 | Dissolved |
| SEROLOGICALS GLOBAL HOLDING COMPANY LIMITED | 05028717 | 01/02/2013 | Dissolved |
| SERONO LIMITED | 01192915 | 01/09/2012 | Dissolved |
| UPSTATE LTD. | 03755378 | 01/02/2013 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ALDRICH CHEMICAL COMPANY LIMITED | 00618251 | 26/05/2016 | 01/07/2017 | Dissolved |
| AZ ELECTRONIC MATERIALS (UK) LIMITED | 06790365 | 01/12/2014 | 01/07/2017 | Dissolved |
| B-LINE SYSTEMS LIMITED | 02560408 | 26/05/2016 | 01/07/2017 | Dissolved |
| BIORELIANCE LTD. | SC122851 | 25/07/2016 | 01/07/2017 | Silver |
| BIORELIANCE UK ACQUISITION LIMITED | 06131176 | 25/07/2016 | 01/07/2017 | Dissolved |
| BRISTOL ORGANICS LIMITED | 00972645 | 26/05/2016 | 01/07/2017 | Dissolved |
| EPICHEM GROUP LIMITED | 02332327 | 25/05/2016 | 01/07/2017 | Gold |
| FLUKA CHEMICALS LIMITED | 00908593 | 26/05/2016 | 01/07/2017 | Dissolved |
| LAMBERTS HEALTHCARE LIMITED | 04500877 | 21/02/2013 | 01/07/2017 | Bronze |
| MERCK HOLDING LTD. | 08531583 | 16/05/2013 | 01/07/2017 | Silver |
| MERCK INVESTMENTS LIMITED | 04083127 | 01/09/2012 | 01/07/2017 | Not Trading |
| MERCK LIFE SCIENCE UK LIMITED | 00660457 | 01/09/2012 | 01/07/2017 | Gold |
| MERCK LTD | 00916419 | 01/09/2012 | 01/07/2017 | Not Trading |
| MERCK PERFORMANCE MATERIALS SERVICES UK LIMITED | 05183093 | 01/12/2014 | 01/07/2017 | Dissolved |
| MERCK SERONO EUROPE LIMITED | 03038737 | 01/09/2012 | 01/07/2017 | Dissolved |
| MERCK SERONO LIMITED | 00990823 | 01/09/2012 | 01/07/2017 | Gold |
| MILLIPORE (U.K.) LIMITED | 04130249 | 01/10/2012 | 01/07/2017 | Gold |
| NEW ERA LABORATORIES LIMITED | 00255244 | 07/08/2013 | 11/09/2013 | Dissolved |
| PROCTER & GAMBLE HEALTH LIMITED | 01445808 | 01/02/2013 | 01/07/2017 | Bronze |
| SAFC BIOSCIENCES LIMITED | 03195318 | 26/05/2016 | 01/07/2017 | Gold |
| SAFC HITECH LIMITED | 01670306 | 25/05/2016 | 01/07/2017 | Gold |
| SEVEN SEAS LIMITED | 00351663 | 13/02/2013 | 01/07/2017 | Amber |
| SIGMA CHEMICAL COMPANY LIMITED | 00781324 | 26/05/2016 | 01/07/2017 | Not Trading |
| SIGMA ENTITY ONE LIMITED | 04833787 | 26/05/2016 | 01/07/2017 | Dissolved |
| SIGMA-ALDRICH COMPANY LIMITED | 02204655 | 26/05/2016 | 01/07/2017 | Silver |
| SIGMA-ALDRICH HOLDINGS LIMITED | 01952745 | 26/05/2016 | 01/07/2017 | Dissolved |
| SIGMA-GENOSYS LTD | 03280305 | 26/05/2016 | 01/07/2017 | Dissolved |
| UFC LIMITED | 01780975 | 26/05/2016 | 01/07/2017 | Dissolved |
| ULTRAFINE LIMITED | 05071721 | 26/05/2016 | 01/07/2017 | Dissolved |
| WEBNEST LIMITED | 01105377 | 26/05/2016 | 01/07/2017 | Dissolved |
| WESSEX BIOCHEMICALS LIMITED | 00751692 | 26/05/2016 | 01/07/2017 | Dissolved |