| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Glass-Paisley Ltd | SC049810 | 31/12/1988 | Dissolved |
| Intex Glass Systems Ltd | SC194249 | 06/04/1999 | Dissolved |
| J. & W. HARAN LIMITED | SC041513 | 31/12/1988 | Dissolved |
| OLYMPIA PATENT GLAZING LIMITED | SC066219 | 28/01/1994 | Dissolved |
| STEVENSON THERMAL INSULATION (HOLDINGS)LIMITED | SC046136 | 01/06/1995 | Not Trading |
| Tilemasters Ltd | SC059465 | 31/12/1988 | Dissolved |
| Westcrowns Building & Management Services Ltd | SC047241 | 31/12/1988 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CAITHNESS ELECTRICAL CONTRACTORS LIMITED | SC051104 | 05/08/1988 | 20/12/1990 | Dissolved |
| Caithness Stage & Lighting Ltd | SC071979 | 31/12/1988 | 22/08/1991 | Dissolved |
| IG GLASS GROUP LIMITED | SC098991 | 31/12/1988 | 16/11/2023 | Gold |
| INDEPENDENT GLASS COMPANY LIMITED | SC107294 | 31/12/1988 | 16/11/2023 | Silver |
| OLYMPIA PATENT GLAZING LIMITED | SC066219 | 03/11/1988 | 28/01/1994 | Dissolved |
| OLYMPIA PATENT GLAZING LIMITED | SC066219 | 03/11/1988 | 28/01/1994 | Dissolved |
| SB COMMERCIAL SERVICES LIMITED | SC160937 | 27/12/1995 | 10/05/2000 | Dissolved |
| SB VERIFICATION LIMITED | SC167052 | 16/07/1996 | 10/05/2000 | Dissolved |
| STRATHCLYDE INSULATING GLASS LIMITED | SC077369 | 12/10/1989 | 22/06/1999 | Silver |
| Strathclyde Glass & Glazing Co. Ltd | SC053634 | 03/10/1989 | 22/06/1999 | Dissolved |
| WESTCROWNS CONTRACTING SERVICES LTD. | SC045884 | 31/12/1988 | 10/07/2023 | Amber |