| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| OFFSHORE TRAINING FOUNDATION | SC229139 | 28/06/2024 | Gold |
| OPITO ENTERPRISES LIMITED | SC399489 | 13/05/2011 | Gold |
| OPITO GROUP LIMITED | SC370713 | 01/06/2011 | Silver |
| OPITO LIMITED | SC152175 | 28/06/2024 | Amber |
| OPITO TRAINING MANAGEMENT LIMITED | SC260821 | 28/06/2024 | Silver |
| SMITH ARTHUR LIMITED | 09641138 | 16/06/2015 | Gold |
| Schlumberger Oilfield Uk Plc | NF004024 | 26/07/2005 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| IOGP LONDON LTD | 12888499 | 18/09/2020 | 01/12/2020 | Not Trading |
| OFFSHORE TRAINING FOUNDATION | SC229139 | 01/04/2008 | 25/03/2010 | Gold |
| OPITO LIMITED | SC152175 | 26/02/2008 | 25/03/2010 | Amber |
| PALOAK LIMITED | SC069075 | 30/03/2006 | 31/05/2015 | One Red Flag |
| PATHFINDER ENERGY SERVICES LIMITED | 03709500 | 31/07/2012 | 30/06/2015 | Dissolved |
| SCHLUMBERGER OILFIELD UK LIMITED | 04157867 | 26/07/2005 | 30/06/2015 | Bronze |
| SCHLUMBERGER UK LIMITED | 07373289 | 20/12/2010 | 30/06/2015 | Silver |
| SLB UK II LIMITED | 01332348 | 01/11/2005 | 30/06/2015 | Amber |
| THE ROYAL AUTOMOBILE CLUB LIMITED | 03570702 | 14/06/2017 | 17/07/2024 | Gold |
| THE UK OFFSHORE ENERGIES ASSOCIATION LIMITED | 01119804 | 31/03/2010 | 01/04/2015 | Bronze |