| Name | Company Number | Date Appointed | Rating |
|---|
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ABINGTON PARK LIMITED | 03587952 | 14/09/2010 | 31/01/2019 | Not Trading |
| BARRIKADE LIMITED | 04026476 | 14/09/2010 | 31/01/2019 | Dissolved |
| GPE 1 LIMITED | 09893328 | 30/11/2015 | 31/01/2019 | One Red Flag |
| GRANTA CENTRE LIMITED | 04026422 | 14/09/2010 | 31/01/2019 | Dissolved |
| GRANTA ENTRANCE LIMITED | 07299156 | 20/09/2010 | 31/01/2019 | Bronze |
| GRANTA PARK ESTATES LIMITED | 02558329 | 01/07/2010 | 31/01/2019 | Silver |
| NSIRC LIMITED | 08311437 | 07/02/2013 | 31/01/2019 | Not Trading |
| PLANT INTEGRITY LIMITED | 03341703 | 14/09/2010 | 31/01/2019 | Bronze |
| SIRF LIMITED | 08311440 | 28/11/2012 | 31/01/2019 | Not Trading |
| TWI (SCOTS) LTD | SC404965 | 08/08/2011 | 31/01/2019 | Dissolved |
| TWI CERTIFICATION LIMITED | 03108202 | 17/04/2013 | 31/01/2019 | Silver |
| TWI ESTATES LIMITED | 03203074 | 14/09/2010 | 31/01/2019 | Silver |
| TWI LIMITED | 03859442 | 30/09/2010 | 31/01/2019 | Gold |
| TWI RESEARCH CENTRE (CYMRU) LIMITED | 04896607 | 30/09/2010 | 31/01/2019 | Dissolved |
| TWI TECHNOLOGY CENTRE (YORKSHIRE) LIMITED | 04456545 | 30/09/2010 | 31/01/2019 | Not Trading |
| TWI TECHNOLOGY TRUST | 04323948 | 14/09/2010 | 31/01/2019 | Dissolved |
| VITRESYN LIMITED | 04026459 | 14/09/2010 | 31/01/2019 | Dissolved |
| WAVERLEY TECHNOLOGY LIMITED | 05248952 | 30/09/2010 | 31/01/2019 | Not Trading |