| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BRITISH VAPOUR TESTING COMPANY LIMITED | 00393873 | 31/12/1991 | Not Trading |
| COMPOSITE INSPECTION LIMITED | 05968432 | 16/10/2006 | Not Trading |
| CYPHER SCIENCE LIMITED | 02847476 | 29/02/1996 | Not Trading |
| CYPHERTAG2 Ltd | 04177198 | 20/07/2001 | Dissolved |
| Cargoit Ltd | 02886135 | 26/08/1994 | Dissolved |
| Celtic Technical Services Ltd | 01061883 | 31/07/1992 | Dissolved |
| DNA TRACER TECHNOLOGIES LTD | 07641911 | 20/05/2011 | Amber |
| FORECAST TECHNOLOGY LIMITED | 08653012 | 01/04/2018 | One Red Flag |
| MARLEY NOMINEES LIMITED | 12278915 | 13/12/2019 | Not Trading |
| MINTON,TREHARNE & DAVIES LIMITED | 00435262 | 31/12/1991 | Gold |
| MTD MARINE SURVEYS LIMITED | 04080655 | 26/10/2001 | Not Trading |
| Microtrace Ltd | 03242971 | 23/10/1996 | Dissolved |
| THE SOUTH WEST SCHOOL OF NDT LIMITED | 07593193 | 06/04/2011 | Not Trading |
| TRACETAG INTERNATIONAL LIMITED | 04123581 | 16/08/2001 | Amber |
| TRACETAG UK LTD | 04177270 | 20/07/2001 | Amber |
| Vitosonics (U K) Ltd | 01730809 | 20/07/2000 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BAUGH & WEEDON LIMITED | 00918792 | 20/07/2000 | 16/05/2012 | Bronze |
| Cargotrace Ltd | 02971050 | 20/09/1994 | 01/07/1996 | Dissolved |
| N D T Magtronics Ltd | 03222746 | 01/11/1996 | 17/04/1997 | Dissolved |