| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Geographic Information Systems & Services Limited | SC139914 | 22/01/1993 | Dissolved |
| MASON DIGITAL MAPPING LIMITED | SC074647 | 30/04/1988 | Not Trading |
| MASON LAND SURVEYS LIMITED | SC058592 | 31/12/1988 | Dissolved |
| MASON SURVEYS LIMITED | SC158030 | 01/06/1999 | Silver |
| REPROTEQ LIMITED | SC295130 | 01/01/2019 | Not Trading |
| Virtual Engineering Adp Ltd | SC219505 | 24/05/2001 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| JGB BLACKFORD LTD | SC284759 | 13/05/2005 | 13/06/2005 | Dissolved |
| Virtual Engineering Adp Ltd | SC219505 | 24/05/2001 | 17/12/2001 | Dissolved |