| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CULVIE LIMITED | SC610493 | 10/10/2018 | Dissolved |
| PI ASSET INTEGRITY LIMITED | SC292210 | 08/06/2010 | Dissolved |
| PI GAS TURBINES (SWEDEN) LIMITED | SC342698 | 08/06/2010 | Dissolved |
| PI MINERVA LIMITED | SC331502 | 08/06/2010 | Dissolved |
| PI ROTATING MACHINERY LIMITED | SC311894 | 08/06/2010 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BRAE GAS MARKETING COMPANY LIMITED | 00721973 | 28/06/2008 | 24/07/2009 | Dissolved |
| CULTER AMATEUR SPORTS (TRAINING, LEISURE AND EDUCATION) LIMITED | SC231926 | 01/05/2015 | 23/05/2020 | Amber |
| FUJAIRAH OIL AND GAS UK 11 LIMITED | 00638574 | 28/06/2008 | 24/07/2009 | Insolvent |
| FUJAIRAH OIL AND GAS UK 12 LIMITED | 00981126 | 28/06/2008 | 24/07/2009 | Dissolved |
| FUJAIRAH OIL AND GAS UK 13 LLC | FC028894 | 11/03/2009 | 24/07/2009 | Dissolved |
| FUJAIRAH OIL AND GAS UK LLC | FC009587 | 24/05/2005 | 24/07/2009 | Dissolved |
| MARATHON OIL EXPLORATION (U.K.) LIMITED | 01007674 | 28/06/2008 | 24/07/2009 | Dissolved |
| MARATHON OIL UK LIMITED | SF000275 | 24/05/2005 | 24/07/2009 | Dissolved |
| MARATHON UPSTREAM NORTH SEA (G.B.) LIMITED | 00812455 | 28/06/2008 | 24/07/2009 | Dissolved |
| MARATHON UPSTREAM U.K. LLC | FC005250 | 28/06/2008 | 24/07/2009 | Dissolved |
| OFFSHORE TRAINING FOUNDATION | SC229139 | 01/04/2008 | 28/06/2024 | Gold |
| OPITO ENTERPRISES LIMITED | SC399489 | 13/05/2011 | 28/06/2024 | Gold |
| OPITO GROUP LIMITED | SC370713 | 06/01/2010 | 28/06/2024 | Silver |
| OPITO LIMITED | SC152175 | 20/11/2007 | 28/06/2024 | Amber |
| OPITO TRAINING MANAGEMENT LIMITED | SC260821 | 18/04/2018 | 28/06/2024 | Silver |
| PERFORMANCE IMPROVEMENTS (P I) LIMITED | SC173714 | 08/06/2010 | 15/01/2014 | Dissolved |
| PERFORMANCE IMPROVEMENTS (PI) GROUP LIMITED | SC209758 | 08/06/2010 | 15/01/2014 | Dissolved |
| PI CONTROL TECHNOLOGIES LIMITED | SC332213 | 08/06/2010 | 28/11/2012 | Dissolved |
| PI ENERGY & EMISSIONS LIMITED | SC209704 | 08/06/2010 | 15/01/2014 | Dissolved |
| PI GAS TURBINES LIMITED | SC209759 | 08/06/2010 | 15/01/2014 | Dissolved |
| PI RECRUITMENT LIMITED | SC283157 | 08/06/2010 | 28/11/2012 | Dissolved |
| ROCKROSE UKCS 10 LIMITED | 04105025 | 24/05/2005 | 24/07/2009 | Silver |
| ROCKROSE UKCS 9 LIMITED | 01293052 | 28/06/2008 | 24/07/2009 | Gold |
| SPECIALIST EQUIPMENT SOLUTIONS LIMITED | 01270073 | 01/04/2010 | 12/09/2013 | Bronze |
| THE UK OFFSHORE ENERGIES ASSOCIATION LIMITED | 01119804 | 01/07/2006 | 19/04/2007 | Silver |