| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Aurial Ltd | 06631806 | 26/06/2008 | Dissolved |
| Gad Developments Ltd | 05879655 | 18/07/2006 | Dissolved |
| Gad Technology Ltd | 05879666 | 18/07/2006 | Dissolved |
| H & Co & Partners Ltd | 00579030 | 09/07/1991 | Dissolved |
| Northbrook House Ltd | 02229659 | 05/04/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| GAD R & D LIMITED | 05879868 | 18/07/2006 | 04/11/2021 | One Red Flag |
| PSYANNA LIMITED | 06732882 | 24/10/2008 | 04/01/2010 | Dissolved |
| THE INSTITUTION OF STRUCTURAL ENGINEERS BENEVOLENT FUND | 03087463 | 02/08/1995 | 11/05/2006 | Bronze |
| THE INSTITUTION OF STRUCTURAL ENGINEERS EDUCATIONAL TRUST | 02572820 | 27/08/1993 | 22/07/1999 | Dissolved |