| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Drury Aggregates Ltd | 04466484 | 21/06/2002 | Dissolved |
| Jetwells Piling & Foundations Ltd | 03219141 | 27/10/2003 | Dissolved |
| PUMPWISE DREDGING LIMITED | 01862101 | 24/02/1997 | Dissolved |
| Pinch Plant Ltd | 03271041 | 24/02/1997 | Dissolved |
| Star Recycling Ltd | 03175559 | 27/03/1997 | Dissolved |
| Star Recycling Ltd | 03175559 | 24/02/1997 | Dissolved |
| Star Waste Ltd | 03214806 | 27/03/1997 | Dissolved |
| Star Waste Ltd | 03214806 | 24/02/1997 | Dissolved |
| Strathlachlan Ltd | 02299782 | 27/03/1997 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| DIGITAL CORPORATE IMAGE LIMITED | 03702490 | 27/01/1999 | 25/05/2000 | Dissolved |
| DIGITAL CORPORATE IMAGE LIMITED | 03702490 | 27/01/1999 | 25/05/2000 | Dissolved |
| Dpc Contractors Ltd | 03465068 | 13/11/1997 | 15/10/1998 | Dissolved |
| Dpc Contractors Ltd | 03465068 | 15/10/1998 | 17/09/1999 | Dissolved |
| Farnway Ltd | 04721031 | 30/04/2003 | 20/10/2003 | Dissolved |
| HILL PILING LIMITED | 03143503 | 16/02/1996 | 21/06/2023 | Bronze |
| HILL PROPERTIES (ESSEX) LIMITED | 06468923 | 10/01/2008 | 01/09/2017 | Bronze |
| HILL PROPERTIES (ESSEX) LIMITED | 06468923 | 28/09/2017 | 13/12/2018 | Bronze |
| PINCH GROUP LIMITED | 03679610 | 23/12/1998 | 21/06/2023 | One Red Flag |
| PUMPWISE DREDGING LIMITED | 01862101 | 30/05/1996 | 23/11/2000 | Dissolved |
| Pinch Plant Ltd | 03271041 | 27/03/1997 | 05/02/1998 | Dissolved |
| R. W. HILL (FELIXSTOWE) LIMITED | 03157230 | 27/03/1997 | 11/09/2003 | Gold |
| R. W. HILL (FELIXSTOWE) LIMITED | 03157230 | 24/02/1997 | 21/06/2023 | Gold |
| R.W. HILL (PILING) LIMITED | 01935383 | 11/03/1996 | 15/10/1998 | One Red Flag |
| R.W. HILL (PILING) LIMITED | 01935383 | 11/03/1996 | 21/06/2023 | One Red Flag |
| RIVERDALE ASSETS LIMITED | 03684524 | 13/01/1999 | 25/05/2000 | Bronze |
| RIVERDALE ASSETS LIMITED | 03684524 | 13/01/1999 | 25/05/2000 | Bronze |
| RIVERDALE ESTATES LIMITED | 03280625 | 02/03/1999 | 25/05/2000 | Gold |
| RIVERDALE PROJECTS LIMITED | 03782282 | 03/06/1999 | 25/05/2000 | One Red Flag |
| Star Group Plc | 02437251 | 08/12/1997 | 11/02/1999 | Dissolved |
| Star Group Plc | 02437251 | 08/12/1997 | 11/02/1999 | Dissolved |
| Strathlachlan Ltd | 02299782 | 18/10/1991 | 03/10/1994 | Dissolved |
| THE HILL GROUP (1985) LIMITED | 06604841 | 28/05/2008 | 21/06/2023 | Bronze |
| Wickford Groundwork Ltd | 01167838 | 15/11/1995 | 22/02/2005 | Dissolved |