| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| AC FINANCIAL CONSULTING LIMITED | 06924967 | 05/06/2009 | Dissolved |
| APEX STEEPLEJACKS LIMITED | SC240151 | 16/10/2019 | Not Trading |
| BROOKE, EDGLEY (INDUSTRIAL CHIMNEYS) LIMITED | 00754212 | 16/10/2019 | Silver |
| C.J.S. (EASTERN) LIMITED | 03374593 | 16/10/2019 | Not Trading |
| CARDINAL SPECIALIST SERVICES LIMITED | 02792592 | 16/10/2019 | Not Trading |
| GUARDIAN CRADLE MAINTENANCE LTD | 04948690 | 16/10/2019 | Amber |
| HEALTH & SAFETY PRODUCTS LIMITED | 01914590 | 31/01/2023 | Dissolved |
| INDEPTH SERVICES LIMITED | 01730197 | 31/01/2023 | Not Trading |
| LIGHTNING PROTECTION TESTING LIMITED | 06087876 | 16/10/2019 | Not Trading |
| NAP HEIGHT SERVICES LIMITED | SC285771 | 16/10/2019 | Not Trading |
| NATHS LIMITED | SC239902 | 16/10/2019 | One Red Flag |
| OHMEGA TESTING SERVICES LIMITED | 08089054 | 12/10/2015 | Amber |
| PENDRICH ROPE ACCESS LIMITED | SC285772 | 16/10/2019 | Not Trading |
| PROTECTIS LIMITED | 03204173 | 16/10/2019 | Not Trading |
| R. LANGSTON JONES & COMPANY LIMITED | 02686030 | 16/10/2019 | Not Trading |
| Random Stone Properties Ltd | 03219814 | 03/07/1996 | Dissolved |
| TEST STRIKE UK LIMITED | 06861151 | 16/10/2019 | Silver |
| TRINITY PROTECTION SYSTEMS LTD | 08552492 | 18/01/2019 | Strike Off |
| TRINITY TEN LIMITED | 07261813 | 18/01/2019 | Silver |
| WHITE TESTING (UK) LIMITED | SC291129 | 03/10/2024 | Bronze |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ABACUS WOOD BRIDGEND LIMITED | 05918765 | 29/01/2009 | 30/06/2009 | Dissolved |
| ABACUS WOOD LIMITED | 06456127 | 07/10/2008 | 30/06/2009 | Dissolved |
| ACCESS CONTRACTING LIMITED | 03240798 | 16/10/2019 | 12/08/2024 | One Red Flag |
| ACCESS TRAINING SOLUTIONS LIMITED | 06603449 | 31/08/2013 | 25/09/2013 | Strike Off |
| ACESCOTT SPECIALIST SERVICES LIMITED | 06603375 | 31/08/2013 | 25/09/2013 | Silver |
| BROOKE EDGLEY SPECIALIST TECHNICAL SERVICES LIMITED | 00591982 | 16/10/2019 | 12/08/2024 | One Red Flag |
| GUARDIAN ELECTRICAL COMPLIANCE LIMITED | 07388602 | 18/10/2018 | 12/08/2024 | Silver |
| INDEPTH HYGIENE SERVICES LIMITED | 00969762 | 31/01/2023 | 12/08/2024 | Gold |
| INTEGRAL CRADLES LIMITED | 05123002 | 16/10/2019 | 24/12/2020 | Amber |
| J W GRAY LIGHTNING PROTECTION LIMITED | 04423038 | 16/10/2019 | 12/08/2024 | One Red Flag |
| LAND ENERGY GIRVAN LIMITED | 06813953 | 09/02/2009 | 30/06/2009 | Silver |
| M&P FIRE PROTECTION LTD | 07296784 | 04/07/2018 | 12/08/2024 | One Red Flag |
| PENDRICH HEIGHT SERVICES LIMITED | SC257071 | 16/10/2019 | 12/08/2024 | One Red Flag |
| PTSG ACCESS AND SAFETY LIMITED | 03233894 | 27/06/2011 | 12/08/2024 | One Red Flag |
| PTSG BUILDING ACCESS SPECIALISTS LIMITED | 08950738 | 08/10/2019 | 12/08/2024 | One Red Flag |
| PTSG ELECTRICAL SERVICES LIMITED | 02811979 | 10/12/2010 | 12/08/2024 | One Red Flag |
| PTSG FIRE SOLUTIONS LIMITED | 06603460 | 31/08/2013 | 25/09/2013 | Strike Off |
| PTSG STEEPLEJACKING LIMITED | 06330511 | 31/08/2013 | 25/09/2013 | Strike Off |
| PTSG STEEPLEJACKS LIMITED | 06473821 | 31/08/2013 | 25/09/2013 | Strike Off |
| PTSG TRAINING SOLUTIONS LIMITED | 06603396 | 31/08/2013 | 25/09/2013 | Silver |
| PURE POWER LTD | 09778919 | 05/10/2020 | 12/08/2024 | Gold |
| TRINITY FIRE AND SECURITY SYSTEMS LTD | 03304503 | 18/01/2019 | 12/08/2024 | Silver |
| UK DRY RISERS (MAINTENANCE) LTD | 07455012 | 05/07/2016 | 12/08/2024 | Silver |
| UK DRY RISERS LIMITED | 06834899 | 05/07/2016 | 12/08/2024 | Amber |
| UK SPRINKLERS LIMITED | 07915651 | 16/10/2019 | 12/08/2024 | One Red Flag |