| Allen & Hanburys |
| Alliance Boots |
| Amersham plc |
| Beecham Group |
| Boots (company) |
| Boots Factory Site |
| Chiroscience |
| Corbyn, Stacey & Company |
| Crookes Healthcare |
| The Distillers Company |
| Fisons |
| Fulhold Pharma |
| Galpharm International |
| Gentech Pharmaceutical |
| GW Pharmaceuticals |
| Hikma Pharmaceuticals |
| International Therapeutic Proteins |
| ITH Pharma |
| James Woolley, Sons and Co. |
| Medherant |
| Nelsons (Homeopathy) |
| Norbrook Group |
| Oxford Biomedica |
| Pfizer UK |
| Quantum Pharmaceutical |
| Reliant Pharmaceuticals |
| Sciensus |
| Shire (pharmaceutical company) |
| Stallergenes Greer |
| Thornton & Ross |
| Unilever |
| Unipath |
| Vernalis Research |
| ViiV Healthcare |
| William Flockhart |
| Zeneca |