| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Euroforce Employment Services Ltd | 05075907 | 24/06/2004 | Dissolved |
| S. E. S. Electrical Engineering Ltd | 05313053 | 15/01/2005 | Dissolved |
| S.E.S. Construction Ltd | 05075693 | 24/06/2004 | Dissolved |
| S.E.S. Holdings P.L.C. | 05144214 | 24/06/2004 | Dissolved |
| S.E.S. Plant Ltd | 05020645 | 18/02/2004 | Dissolved |
| S.E.S. Waste Management Ltd | 05175925 | 16/09/2004 | Dissolved |
| SPECIALIST MINING SERVICES LIMITED | 02430725 | 09/10/1991 | Insolvent |
| Specialist Rail Services Ltd | 04370954 | 11/02/2002 | Dissolved |
| Specialist Supervisory Services Ltd | 02974128 | 22/11/1994 | Dissolved |
| Tradewinds Leisure Ltd | 03006565 | 19/01/1995 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| JACKSON STREET MOTORS LIMITED | 03478647 | 10/12/1997 | 29/04/2003 | One Red Flag |
| JACKSON STREET MOTORS LIMITED | 03478647 | 10/12/1997 | 29/04/2003 | One Red Flag |
| MINING SERVICES 2017 LIMITED | 05160492 | 24/06/2004 | 26/03/2015 | Insolvent |
| SES (SPECIALIST ENGINEERING) GROUP LIMITED | 06700083 | 04/11/2008 | 26/03/2015 | Amber |
| SES INFRASTRUCTURE SERVICES LTD. | 06681687 | 04/11/2008 | 26/03/2015 | Dissolved |
| SES RESOURCES LIMITED | 09146318 | 24/07/2014 | 26/03/2015 | Dissolved |
| SMS HOUSE MANAGEMENT COMPANY LIMITED | 02932818 | 29/08/1995 | 03/11/2000 | Silver |
| SMS HOUSE MANAGEMENT COMPANY LIMITED | 02932818 | 03/11/2000 | 10/03/2001 | Silver |
| SPECIALIST ENGINEERING SERVICES LIMITED | 03300301 | 28/01/1997 | 26/03/2015 | Silver |
| TEI LIMITED | 05236072 | 23/09/2004 | 26/03/2015 | One Red Flag |