| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Ross Offshore (U K) Ltd | 02594321 | 30/09/1997 | Dissolved |
| Sedco Forex Offshore International N.V. | SF000831 | 02/01/2001 | Dissolved |
| Shelf Drilling Ltd | 01515543 | 30/09/1997 | Dissolved |
| Target Drilling Services U K Ltd | 02219209 | 30/09/1997 | Dissolved |
| Transnor Rig Ltd | 02573756 | 30/09/1997 | Dissolved |
| Transocean Kan Tan Ltd | 03181992 | 30/09/1997 | Dissolved |
| Wilrig (U K) Ltd | 01949869 | 30/09/1997 | Dissolved |
| Wilrig Holdings (U K) Ltd | 02004151 | 30/09/1997 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| SDS OFFSHORE LIMITED | 01822670 | 30/09/1997 | 16/07/2002 | Dissolved |
| TRANSOCEAN DRILLING LIMITED | SC129333 | 30/09/1997 | 16/07/2002 | Dissolved |
| TRANSOCEAN SERVICES UK LIMITED | 02506922 | 30/09/1997 | 16/07/2002 | Dissolved |
| WILRIG OFFSHORE (UK) LIMITED | 01913362 | 30/09/1997 | 16/07/2002 | Dissolved |