| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Airbay | SC146347 | 28/09/1993 | Dissolved |
| Arbish Ltd | SC139711 | 10/09/1992 | Dissolved |
| BSW LIMITED | SC335302 | 13/03/2008 | Not Trading |
| C & L PROPERTIES (CRATHIE) LIMITED | SC327163 | 17/08/2007 | One Red Flag |
| C & L PROPERTIES (JKR) LIMITED | SC337542 | 09/02/2008 | Dissolved |
| C & L PROPERTIES (SAUFC) LIMITED | SC337547 | 09/02/2008 | Dissolved |
| C & L PROPERTIES (THE GRANGE) LIMITED | SC212664 | 20/10/2005 | One Red Flag |
| C & L PROSPECTS LIMITED | SC337544 | 09/02/2008 | Dissolved |
| CARNLEA DEVELOPMENTS LTD. | SC222576 | 27/07/2006 | Dissolved |
| CASTLECALL LIMITED | SC329479 | 05/09/2007 | One Red Flag |
| DENSBRIDGE LIMITED | SC177639 | 29/12/1997 | Not Trading |
| Denisla Plc | SC217919 | 09/04/2001 | Dissolved |
| Elboramhor Ltd | SC117231 | 11/04/1991 | Dissolved |
| FIRST CAPITAL DEVELOPMENTS LIMITED | SC282301 | 08/07/2005 | Dissolved |
| FIRST CONSTRUCTION LIMITED | SC239596 | 13/12/2002 | Silver |
| FIRST DECOMMISSIONING LIMITED | SC383638 | 16/08/2010 | Not Trading |
| FIRST INN LIMITED | SC235590 | 23/10/2002 | Dissolved |
| FIRST MARINE SOLUTIONS LIMITED | SC346015 | 14/07/2009 | Silver |
| FIRST OIL EBT TRUSTEE LIMITED | SC223286 | 18/10/2006 | Dissolved |
| FIRST OIL EXPLORATION (NORTH SEA) LIMITED | SC248243 | 21/06/2007 | Dissolved |
| FIRST OIL EXPLORATION (UK) LIMITED | 01005418 | 12/02/2002 | Dissolved |
| FIRST OIL EXPRO LIMITED | 01021486 | 26/04/1999 | Dissolved |
| FIRST OIL PLC | SC191745 | 06/04/1999 | Dissolved |
| FIRST OIL ROYALTIES LIMITED | 02772880 | 30/10/2007 | Dissolved |
| FIRST OIL SNS LIMITED | 00986309 | 19/10/2004 | Dissolved |
| FIRST OIL UK HOLDINGS LIMITED | 01282732 | 26/04/1999 | Dissolved |
| FIRST SCOT LIMITED | SC239234 | 20/10/2005 | One Red Flag |
| FIRST SUBSEA LIMITED | 02894198 | 10/09/2001 | Bronze |
| FIRST TECH LIMITED | SC282302 | 08/07/2005 | Silver |
| FIRST TIME LIMITED | SC337543 | 09/02/2008 | One Red Flag |
| FIRST WHISKY LIMITED | SC223370 | 05/11/2001 | Dissolved |
| FOURLET (CASTLECALL) LIMITED | SC330460 | 02/10/2007 | Silver |
| FOURLET (CRATHIE) LIMITED | SC330461 | 02/10/2007 | Silver |
| FOURLET (SAUFC) LIMITED | SC337548 | 09/02/2008 | Silver |
| FOURLET (THE GRANGE) LIMITED | SC330458 | 26/09/2007 | Silver |
| FOURLET LIMITED | SC110638 | 31/05/1989 | Amber |
| FOURLET PROSPECTS LIMITED | SC337545 | 09/02/2008 | Silver |
| First Oil International North Sea Ltd | 02487444 | 12/02/2002 | Dissolved |
| First Textile Flooring Ltd | SC227803 | 13/10/2003 | Dissolved |
| INTER CITY (ABERDEEN) LIMITED | SC149122 | 21/07/1999 | Silver |
| Integrated Management of Production Reservoir & Exploratio | SC153264 | 22/11/1994 | Dissolved |
| MOORING SYSTEMS LIMITED | SC251291 | 27/06/2003 | Silver |
| Marischal Industrial Services Ltd | SC137018 | 07/09/1992 | Dissolved |
| Morneshill Ltd | SC241827 | 28/01/2003 | Dissolved |
| NAUTRICITY LIMITED | SC366792 | 17/08/2010 | Dissolved |
| PROJECT SUPPORT ENGINEERING LTD. | SC188613 | 21/04/1999 | Dissolved |
| Roots Gas Ltd | SC205750 | 20/12/2001 | Dissolved |
| TANO ENERGY LIMITED | SC197827 | 28/01/2002 | Dissolved |
| TRIPOS LIMITED | SC141787 | 21/12/1992 | Amber |
| UNION BRIDGE LIMITED | SC166472 | 25/04/1997 | Dissolved |
| ZIPFENCE LIMITED | 02592944 | 01/04/2010 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ARNLEA SYSTEMS LIMITED | SC219433 | 19/09/2001 | 24/03/2011 | One Red Flag |
| Anwel Ltd | SC125588 | 11/07/1990 | 05/02/1991 | Dissolved |
| Boss Oilfield Services Ltd | SC195226 | 05/08/1999 | 20/04/2001 | Dissolved |
| C & L PROPERTIES (THE GRANGE) LIMITED | SC212664 | 20/10/2005 | 13/12/2006 | One Red Flag |
| CASTLECALL LIMITED | SC329479 | 05/09/2007 | 20/11/2007 | One Red Flag |
| CHARGEWOOD LIMITED | SC146346 | 21/09/1993 | 01/08/1997 | Dissolved |
| COMMUNICATION RENTALS LIMITED | SC176534 | 23/07/1997 | 19/04/2001 | Dissolved |
| DESIGN ENGINEERING LIMITED | SC190479 | 02/11/1998 | 19/04/2001 | Dissolved |
| DOWNHOLE TECHNOLOGY LIMITED | SC157994 | 02/06/1995 | 19/04/2001 | Dissolved |
| DRILL-WRIGHT LIMITED | SC169830 | 07/02/1997 | 19/04/2001 | Silver |
| DRUM KINGSWELLS BUSINESS PARK LIMITED | SC374483 | 16/04/2010 | 01/06/2010 | Dissolved |
| ELBORA LIMITED | SC112606 | 31/12/1989 | 29/03/1996 | Dissolved |
| ENACO LIMITED | 01092750 | 29/10/1993 | 01/08/1997 | Dissolved |
| ENACO MUDCAT SYSTEMS LIMITED | SC110053 | 29/10/1993 | 01/08/1997 | Dissolved |
| FIRST SCOT LIMITED | SC239234 | 20/10/2005 | 04/12/2006 | One Red Flag |
| FISHING SERVICES LIMITED | SC153760 | 17/11/1994 | 19/04/2001 | Dissolved |
| INDEPENDENT INTEGRATED SERVICES LIMITED | SC136260 | 10/02/1992 | 19/04/2001 | Dissolved |
| INTERNATIONAL PETROLEUM EQUIPMENT LIMITED | SC126025 | 04/09/1996 | 19/04/2001 | Dissolved |
| Integrated Well Services Ltd | SC147082 | 24/11/1993 | 19/04/2001 | Dissolved |
| LOGIK IMAGE MANAGEMENT LIMITED | SC108323 | 17/12/1987 | 14/01/1988 | Amber |
| MID-EUROPE SUPPLY LIMITED | SC133467 | 06/08/1996 | 19/04/2001 | Dissolved |
| MORRISON MCLEAN ASSOCIATES LIMITED | SC115632 | 13/01/1998 | 19/04/2001 | Dissolved |
| OFFSHORE RENTALS LIMITED | SC109985 | 26/12/1989 | 19/04/2001 | Dissolved |
| OILWELL PRODUCTION SERVICES LIMITED | SC158568 | 14/08/1995 | 19/04/2001 | Dissolved |
| ORWELL GROUP LIMITED | SC160645 | 27/09/1995 | 19/04/2001 | Dissolved |
| POWELL ENGINEERING COMPANY LIMITED | 00427621 | 13/05/1997 | 19/04/2001 | Dissolved |
| POWERFLO RENTALS LIMITED | SC140356 | 08/10/1992 | 19/04/2001 | Dissolved |
| POWERFLO SYSTEMS LIMITED | 01237504 | 13/05/1997 | 19/04/2001 | Dissolved |
| POWERGEN RENTALS LIMITED | SC129021 | 14/12/1992 | 19/04/2001 | Dissolved |
| PROJECT SUPPORT ENGINEERING LTD. | SC188613 | 21/04/1999 | 21/04/1999 | Dissolved |
| PROSERV (2) LIMITED | SC225116 | 09/11/2001 | 08/04/2010 | Dissolved |
| PROSERV (3) LIMITED | SC062293 | 02/04/2003 | 08/04/2010 | Dissolved |
| PUMP RENTALS (INTERNATIONAL) LIMITED | SC067835 | 18/06/1992 | 19/04/2001 | Dissolved |
| QUALITY COMMISSIONING LIMITED | SC160639 | 03/10/1995 | 19/04/2001 | Dissolved |
| RECOVERY SYSTEMS LIMITED | SC152426 | 01/09/1994 | 01/08/1997 | Dissolved |
| SHOREMAYNE LIMITED | 02056198 | 17/10/2000 | 28/01/2002 | Strike Off |
| SHOREMAYNE LIMITED | 02056198 | 17/10/2000 | 21/12/2007 | Strike Off |
| TAMARIND BRIDGE LIMITED | SC163950 | 19/11/2003 | 16/04/2013 | Amber |
| TANK RENTALS LIMITED | SC125694 | 25/03/1991 | 19/04/2001 | Dissolved |
| TRIPOS LIMITED | SC141787 | 21/12/1992 | 01/08/1993 | Amber |
| WEATHERFORD DIS MANUFACTURING (UK) LIMITED | SC075514 | 01/08/1988 | 19/04/2001 | Dissolved |
| WEATHERFORD O.R. LIMITED | SC162923 | 21/05/1996 | 19/04/2001 | Dissolved |
| WELLSERV LIMITED | SC107585 | 25/04/1990 | 01/04/1991 | Dissolved |
| WELLSERV LIMITED | SC107585 | 12/03/1990 | 19/04/2001 | Dissolved |
| YORKCOURT (2002) LIMITED | 04394879 | 22/03/2002 | 24/01/2008 | Dissolved |
| YORKCOURT (2002) LIMITED | 04394879 | 22/03/2002 | 24/01/2008 | Dissolved |
| YORKCOURT PARAGON LIMITED | 04339133 | 27/03/2002 | 21/01/2008 | Bronze |