| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Altec Laboratory Services (Scotland) Ltd | SC086909 | 10/03/1998 | Dissolved |
| BODYCOTE RADIOGRAPHY LIMITED | 01556021 | 14/11/2001 | Dissolved |
| Bridge Tenancies Ltd | SC123784 | 15/03/1990 | Dissolved |
| Errington Laboratories Ltd | 01007607 | 05/10/2001 | Dissolved |
| FERRANAL AND ASSOCIATES LIMITED | 01654182 | 01/02/1995 | Dissolved |
| M T S Daventry Ltd | 00858164 | 01/12/1995 | Dissolved |
| M T S Materials Testing Group Ltd | 01455659 | 12/09/1991 | Dissolved |
| Materials Engineering & Testing Ltd | 02160768 | 03/04/2000 | Dissolved |
| Mts South East Ltd | 00516747 | 28/02/2001 | Dissolved |
| SUGRA CONSULTANCY LTD | SC349894 | 14/10/2008 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ALLIED LABORATORY SERVICES LIMITED | 03814390 | 08/07/2005 | 17/10/2008 | Dissolved |
| BELL ROCK TOPCO LIMITED | 08604683 | 06/08/2013 | 16/11/2021 | Amber |
| BODYCOTE IT LIMITED | SC119877 | 05/01/2006 | 08/10/2008 | Dissolved |
| BODYCOTE METAL TECHNOLOGY LIMITED | 01079184 | 01/01/1997 | 08/10/2008 | Dissolved |
| BODYCOTE THERMAL PROCESSING MEXICO LIMITED | 05755601 | 24/03/2006 | 14/12/2006 | One Red Flag |
| CERTIFIRE LIMITED | 01532827 | 25/03/2006 | 17/10/2008 | Not Trading |
| CITATION CYBER LIMITED | 08314901 | 12/06/2018 | 06/06/2022 | One Red Flag |
| Cirrus Laboratories Ltd | 04404150 | 19/08/2005 | 17/10/2008 | Dissolved |
| Clyde Analytical Ltd | SC116989 | 02/12/2004 | 17/10/2008 | Dissolved |
| EURO ENVIRONMENTAL UTILITIES (HOLDINGS) LIMITED | SC371920 | 01/04/2012 | 08/08/2014 | Dissolved |
| EXOVA (UK) LIMITED | SC070429 | 01/01/1997 | 17/10/2008 | Bronze |
| EXOVA GROUP (UK) LIMITED | 02463815 | 18/01/1992 | 17/10/2008 | Bronze |
| Ensecon Laboratories Ltd | 02490951 | 01/01/2005 | 17/10/2008 | Dissolved |
| FIRAS LIMITED | 03087511 | 25/03/2006 | 17/10/2008 | Not Trading |
| Fire & Materials Ltd | 02235185 | 25/03/2006 | 17/10/2008 | Dissolved |
| Foodscan Laboratories Ltd | SC204661 | 31/08/2006 | 17/10/2008 | Dissolved |
| J.W. WORSLEY (COVENTRY) LIMITED | 02466544 | 05/07/2005 | 17/10/2008 | Dissolved |
| LAW LABORATORIES LIMITED | 04051462 | 28/04/2005 | 17/10/2008 | Dissolved |
| M&C ENERGY GROUP LIMITED | 01547219 | 01/07/2010 | 12/06/2012 | One Red Flag |
| MTS PENDAR LIMITED | 01341879 | 29/09/2003 | 17/10/2008 | Bronze |
| MULL BIDCO LIMITED | 07041483 | 23/12/2009 | 12/06/2012 | Dissolved |
| MULL MIDCO LIMITED | 07058629 | 23/12/2009 | 12/06/2012 | Dissolved |
| MULL TOPCO LIMITED | 07058611 | 21/01/2010 | 12/06/2012 | Dissolved |
| NORPATH LABORATORIES LIMITED | 03380941 | 10/07/2006 | 17/10/2008 | Dissolved |
| PIPELINE DEVELOPMENTS LIMITED | 02309352 | 28/10/2002 | 12/10/2008 | Dissolved |
| Prova (R & D) Ltd | 03790014 | 12/09/2006 | 17/10/2008 | Dissolved |
| SELECT PHARMA LABORATORIES LTD. | SC368899 | 01/01/2014 | 18/08/2015 | One Red Flag |
| WARRINGTON APT LABORATORIES LIMITED | 00648022 | 25/03/2006 | 17/10/2008 | Not Trading |
| WARRINGTON CERTIFICATION LIMITED | 02250182 | 25/03/2006 | 17/10/2008 | Not Trading |
| WARRINGTON FIRE RESEARCH CENTRE (LONDON) LIMITED | 01841316 | 25/03/2006 | 17/10/2008 | Not Trading |
| WARRINGTON FIRE RESEARCH CENTRE LIMITED | 01247124 | 25/03/2006 | 17/10/2008 | Not Trading |
| WARRINGTON FIRE RESEARCH CERTIFICATION LIMITED | 01848375 | 25/03/2006 | 17/10/2008 | Dissolved |
| WARRINGTON FIRE RESEARCH CONSULTANTS LIMITED | 02138201 | 25/03/2006 | 17/10/2008 | Not Trading |
| WARRINGTON FIRE RESEARCH GROUP LIMITED | 01828333 | 25/03/2006 | 17/10/2008 | Gold |