| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| A M J Cleaning Ltd | 01550864 | 16/06/1993 | Dissolved |
| Chalkley Maintenance Ltd | 00469420 | 19/06/1995 | Dissolved |
| City of Westminster Window & Office Cleaning Co Ltd | 00414103 | 18/12/1990 | Dissolved |
| City of Westminster Window & Office Cleaning Co Ltd | 00414103 | 18/12/1990 | Dissolved |
| Wasco (Caxton) Ltd | 01945729 | 14/11/1995 | Dissolved |
| Wasco (Hygienic) Ltd | 02041856 | 31/01/1991 | Dissolved |
| Wasco (London) Ltd | 00478220 | 18/12/1990 | Dissolved |
| Wasco (Resin) Ltd | 01698102 | 18/12/1991 | Dissolved |
| Wasco (Resin) Ltd | 01698102 | 16/06/1993 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| COTSWOLD CASEMENT COMPANY LIMITED(THE) | 00589731 | 16/10/1995 | 28/02/1997 | Gold |
| HYDROPURE DISTRIBUTION LIMITED | 03014576 | 16/05/1995 | 28/02/1999 | Not Trading |
| KINTRA LIMITED | 03403304 | 11/12/2001 | 31/03/2005 | Silver |
| PFPL DEVELOPMENTS LTD. | 04330972 | 25/01/2002 | 25/01/2002 | Silver |
| PFPL DEVELOPMENTS LTD. | 04330972 | 25/01/2002 | 20/10/2003 | Silver |