| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BATH ROYAL LITERARY AND SCIENTIFIC INSTITUTION TRUSTEES | 02857000 | 09/05/2024 | Not Trading |
| PIH KAZAKHSTAN LIMITED | 04036329 | 01/09/2011 | Dissolved |
| THE PIPELINE INDUSTRIES GUILD LIMITED | 02563351 | 25/06/2015 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AVOIDATRENCH LIMITED | 02461460 | 10/07/2006 | 10/12/2010 | Dissolved |
| CEMPIPE LIMITED | 03526677 | 07/11/2007 | 10/12/2010 | Dissolved |
| CRC-EVANS OFFSHORE LIMITED | SC313377 | 09/04/2014 | 16/06/2023 | Amber |
| DANIEL CONTRACTORS LIMITED | 02900712 | 01/06/2006 | 10/12/2010 | Dissolved |
| LMPE REALISATIONS LIMITED | 01398094 | 01/06/2006 | 10/12/2010 | Dissolved |
| P I H HOLDINGS LIMITED | 03335609 | 01/09/2011 | 16/06/2023 | Amber |
| PIH SERVICES LIMITED | 03814515 | 01/09/2011 | 16/06/2023 | One Red Flag |
| PIPELINE INDUCTION HEAT LIMITED | 01478556 | 01/09/2011 | 16/06/2023 | One Red Flag |
| PIPEWAY HOLDINGS LIMITED | 04941282 | 07/11/2007 | 10/12/2010 | Dissolved |
| PIPEWAY LIMITED | 02097769 | 07/11/2007 | 10/12/2010 | Dissolved |
| UNIVERSAL INSPECTION SYSTEMS LIMITED | SC125587 | 03/05/2011 | 16/06/2023 | Dissolved |