| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Aremef Consultants Ltd | 02902710 | 25/02/1994 | Dissolved |
| Beardall, Parry & Associates Ltd | 03038121 | 26/10/2005 | Dissolved |
| Designmarvel Ltd | 03038730 | 10/04/1995 | Dissolved |
| Ice-Breaker Limited | 02868147 | 10/11/1993 | Dissolved |
| Petroscan Ltd | 04573856 | 07/07/2003 | Dissolved |
| ROBBOS LIMITED | 02395678 | 12/05/2000 | Dissolved |
| Rand Geologging Limited | 01608085 | 31/01/1991 | Dissolved |
| Robertson Geokart Joint Venture Company Limited | 02393055 | 07/06/1992 | Dissolved |
| Robertson Overseas Developments Limited | 02242599 | 14/10/1991 | Dissolved |
| Robertson Overseas Ltd | 02720413 | 30/09/1992 | Dissolved |
| Simon-Robertson Ltd | 01360721 | 30/09/1991 | Dissolved |
| The Geochemical Information Repository Ltd | 03937736 | 01/03/2000 | Dissolved |
| Tyumen Robertson Applied Petroleum Services Limited | 02650321 | 18/10/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BLACKWATCH MANAGEMENT LIMITED | SC166156 | 22/08/1996 | 22/03/2000 | Dissolved |
| CGG DATA MANAGEMENT (UK) LIMITED | 05583527 | 05/10/2005 | 01/01/2007 | Dissolved |
| FUGRO ROBERTSON HOLDINGS LIMITED | 03120332 | 21/02/1996 | 30/06/2011 | Dissolved |
| FUGRO-LCT LIMITED | 03355974 | 22/10/2008 | 30/06/2011 | Dissolved |
| GGS GLOBAL GEO SERVICES (UK) LIMITED | 10345564 | 13/09/2017 | 10/12/2018 | Silver |
| LCT LIMITED | 02143690 | 22/10/2008 | 30/06/2011 | Dissolved |
| MARINE GRAVITY ACQUISITION LIMITED | 03698143 | 22/10/2008 | 30/06/2011 | Dissolved |
| RBLC (NO.3) 1996 LIMITED | 01293878 | 24/04/1991 | 07/03/1996 | Dissolved |
| RBLC (NO.4) 1996 LIMITED | 01212786 | 07/09/1992 | 07/03/1996 | Dissolved |
| REAP EAST SHETLAND PLATFORM LIMITED | 05470846 | 03/06/2005 | 25/10/2011 | Dissolved |
| REAP U.K. (1) LIMITED | 05847635 | 15/06/2006 | 30/06/2011 | Dissolved |
| REAP U.K. (2) LIMITED | 05847693 | 15/06/2006 | 30/06/2011 | Dissolved |
| REAP U.K. (3) LIMITED | 05847903 | 15/06/2006 | 30/06/2011 | Dissolved |
| ROBERTSON (UK) LIMITED | 03006207 | 02/10/1995 | 30/06/2011 | Amber |
| ROBERTSON GEOSPEC INTERNATIONAL LIMITED | 03558882 | 25/09/1998 | 30/06/2011 | One Red Flag |
| ROBERTSON RESEARCH INTERNATIONAL LIMITED | 05019270 | 21/01/2004 | 30/06/2011 | Not Trading |
| SEISMIC GEOCODE LIMITED | 01208159 | 14/11/1994 | 07/03/1996 | Dissolved |
| SIMON-HORIZON LIMITED | 00467924 | 14/11/1994 | 07/03/1996 | Insolvent |
| SIMON-TPS LTD | 02174362 | 15/08/1994 | 07/03/1996 | Dissolved |
| Simon-Horizon (Overseas) Ltd | 00864796 | 14/11/1994 | 07/03/1996 | Dissolved |
| Simon-Horizon (Services) Ltd | 01347492 | 14/11/1994 | 07/03/1996 | Dissolved |
| THE TYC COMPANY LIMITED | 03157975 | 07/02/1996 | 26/07/2001 | Dissolved |
| Triwolf Ltd | 02235195 | 15/08/1994 | 07/03/1996 | Dissolved |