| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Houlder One Ltd | 00556559 | 06/12/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| 58-60 WARWICK SQUARE LIMITED | 02629674 | 17/07/1992 | 02/02/2012 | Silver |
| ALDENHAM AVIATION LIMITED | 00449314 | 11/01/1992 | 02/02/2012 | Bronze |
| ELSTREE AERODROME LLP | OC318568 | 21/03/2006 | 20/02/2012 | Strike Off |
| HADLEY SHIPPING COMPANY,LIMITED(THE) | 00218300 | 19/04/1991 | 21/07/2011 | Gold |
| HADLEY SHIPPING INVESTMENTS LIMITED | 04400306 | 21/06/2002 | 31/08/2002 | Dissolved |
| HARVEST HOUSE MANAGEMENT COMPANY LIMITED | 01249526 | 02/03/1999 | 12/04/2012 | Silver |
| HOULDER DIVING RESEARCH FACILITY LIMITED | 01363903 | 13/02/1992 | 02/02/2012 | Dissolved |
| HOULDER LIMITED | 04400298 | 21/06/2002 | 31/08/2002 | Silver |
| Kingsnorth Marine Drilling Ltd | 00317136 | 06/12/1991 | 03/10/1989 | Dissolved |
| SEASPEED MARINE CONSULTING LIMITED | 02106811 | 27/11/1992 | 31/08/2002 | Not Trading |
| SOCIETY FOR UNDERWATER TECHNOLOGY(THE) | 00932590 | 12/01/1992 | 10/12/1992 | Silver |
| TECHNIP SHIPS ONE LIMITED | 02262774 | 10/12/1991 | 25/03/1994 | Amber |
| THE WARWICK SQUARE COMPANY LIMITED | 02672334 | 18/12/1992 | 09/12/1994 | Gold |