| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ALUCO WINDOWS LIMITED | SC105305 | 18/08/1988 | Insolvent |
| Business Ventures 1998 Ltd | SC190473 | 26/08/1999 | Dissolved |
| Colquhoun,Brian,Overseas Ltd | 02477898 | 21/01/1994 | Dissolved |
| Ta Civils | SC100681 | 29/03/1989 | Dissolved |
| Ta Dundee | SC100682 | 29/03/1989 | Dissolved |
| Ta Edinburgh | SC100607 | 29/03/1989 | Dissolved |
| Ta Geotechnical | SC102374 | 31/12/1988 | Dissolved |
| Ta Glasgow | SC100683 | 29/03/1989 | Dissolved |
| Ta London | SC100684 | 29/03/1989 | Dissolved |
| Ta Special Projects | SC100685 | 29/03/1989 | Dissolved |
| Thorburn Group Services | SC079565 | 12/04/1989 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| B C P (1994) Ltd | SC148418 | 20/01/1994 | 01/11/1999 | Dissolved |
| Building Health Consultants Ltd | 02402452 | 21/01/1994 | 01/11/1999 | Dissolved |
| Colquhoun Building Services Ltd | 02323143 | 21/01/1994 | 01/11/1999 | Dissolved |
| Colquhoun Computing Ltd | 00477881 | 21/01/1994 | 01/11/1999 | Dissolved |
| Colquhoun Geotechnical Services Ltd | 02348967 | 21/01/1994 | 01/11/1999 | Dissolved |
| Colquhoun Transportation Planning Ltd | 02008327 | 25/07/1996 | 01/11/1999 | Dissolved |
| Community Urban Renewal Enterprises Limited | SC131766 | 20/09/1991 | 29/10/1999 | Dissolved |
| Ensphere (U K) Ltd | SC108973 | 31/07/1989 | 01/11/1999 | Dissolved |
| GLASGOW SCIENCE CENTRE CHARITABLE TRUST | SC172371 | 01/03/1999 | 17/12/2007 | Silver |
| Greater Easterhouse Development Company Ltd | SC132939 | 17/07/1991 | 31/03/1996 | Dissolved |
| Grove & Wright Ltd | 01820197 | 07/06/1996 | 01/11/1999 | Dissolved |
| Grove and Wright (West) Limited | 02289929 | 07/06/1996 | 01/11/1999 | Dissolved |
| Loch Gilp Developments Ltd | SC077889 | 23/12/1988 | 27/09/1994 | Dissolved |
| Professional Project Management Ltd | SC079423 | 12/04/1989 | 15/03/1990 | Dissolved |
| SCOTTISH BUSINESS IN THE COMMUNITY LIMITED | SC080355 | 12/01/1989 | 05/12/1990 | Not Trading |
| SCOTTISH ENTERPRISE GLASGOW | SC126249 | 31/10/1997 | 03/02/2005 | Not Trading |
| Services Document Reproduction Ltd | 00887093 | 21/01/1994 | 01/11/1999 | Dissolved |
| TARGETING INNOVATION LIMITED | SC144906 | 18/08/2003 | 23/04/2013 | One Red Flag |
| TARGETING INNOVATION SOLUTIONS LIMITED | SC435499 | 28/11/2012 | 23/04/2013 | Silver |
| THORBURN COLQUHOUN HOLDINGS LIMITED | SC085696 | 29/03/1989 | 01/11/1999 | Not Trading |
| THORBURN INVESTMENTS LIMITED | SC075199 | 29/03/1989 | 01/11/1999 | Dissolved |
| Thorburn Colquhoun Trustees Ltd | SC151281 | 14/09/1994 | 01/11/1999 | Dissolved |
| Thorburn Fyffe Ltd | SC110988 | 20/12/1989 | 01/11/1999 | Dissolved |
| URS CORPORATION LIMITED | SC118271 | 01/02/1992 | 01/06/1995 | Gold |
| WOODWARD-CLYDE LIMITED | SC136353 | 01/05/1992 | 01/05/1995 | Dissolved |