| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Cleveland Technical Management Ltd | 02539032 | 12/09/1993 | Dissolved |
| Greenpark Premier Developments Ltd | 04125013 | 25/01/2001 | Dissolved |
| R T M Yeoman Project Systems Ltd | 02757324 | 20/10/1992 | Dissolved |
| Yeoman Engineering Ltd | 02435415 | 24/10/1991 | Dissolved |
| Yeoman Manpower Ltd | 02375854 | 01/10/1991 | Dissolved |
| Yeoman Projects Ltd | 02152192 | 28/08/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Cleveland Technical Management Ltd | 02539032 | 12/09/1991 | 03/08/1992 | Dissolved |
| Cleveland Technical Management Ltd | 02539032 | 28/10/1992 | 03/08/1992 | Dissolved |
| Electron Products Ltd | 04241145 | 13/07/2001 | 07/07/2003 | Dissolved |
| I.D.A. LIMITED | 02927380 | 29/08/2008 | 19/02/2009 | Insolvent |
| London & Mercantile Holdings Plc | 03452316 | 21/10/1997 | 09/03/1998 | Dissolved |
| P.P.T.C. LIMITED | 03315117 | 27/03/1998 | 23/07/1999 | Insolvent |
| POWDER SERVICES LIMITED | 03275400 | 08/11/1996 | 29/11/1996 | Dissolved |
| Silktek Ltd | 02271246 | 21/12/1991 | 24/11/1993 | Dissolved |
| Yeoman - Protex Ltd | 01012817 | 13/03/1992 | 21/07/1997 | Dissolved |
| Ypl Powders Ltd | 04189846 | 06/07/2001 | 20/01/2005 | Dissolved |
| Ypl Powders Ltd | 04189846 | 08/09/2003 | 25/03/2004 | Dissolved |