| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Another Healthcare Co Ltd | 06443852 | 23/01/2008 | Dissolved |
| CERO GENERATION LIMITED | 12272533 | 14/10/2021 | Bronze |
| JOHN LAING INVESTMENTS ABBOTSFORD (UK) LIMITED | 05986528 | 23/01/2008 | Dissolved |
| JOHN LAING INVESTMENTS VANCOUVER (UK) LIMITED | 06538389 | 18/03/2008 | Dissolved |
| MGT TEESSIDE LIMITED | 06574235 | 28/01/2021 | One Red Flag |
| NORDIC RENEWABLE POWER HOLDINGS (UK) LIMITED | 11909504 | 01/12/2020 | Silver |
| SEBERGHAM NOMINEES LIMITED | 00709937 | 14/07/2008 | Dissolved |
| TROJAN ENERGY LIMITED | SC547728 | 20/12/2023 | Amber |
| WAPLES ASSOCIATES LTD | 12583801 | 04/05/2020 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Amcroft Ltd | 04100566 | 03/09/2003 | 31/12/2006 | Dissolved |
| CAPITAL HOSPITALS (HOLDINGS) LTD. | 05462490 | 16/11/2007 | 14/12/2009 | Amber |
| CAPITAL HOSPITALS (ISSUER) PLC | 05462494 | 16/11/2007 | 15/01/2010 | Bronze |
| CAPITAL HOSPITALS LTD. | 05462470 | 16/11/2007 | 14/12/2009 | Amber |
| CARILLION INTEGRATED SERVICES LIMITED | 03679838 | 01/09/2007 | 18/10/2013 | Insolvent |
| CROWN BUSINESS COMMUNICATIONS LIMITED | 02791115 | 28/02/2003 | 31/03/2006 | Insolvent |
| CROWN BUSINESS TRAVEL LIMITED | 03417603 | 28/02/2003 | 31/03/2006 | Dissolved |
| CROWN DIGITAL BROADCASTING LIMITED | 03426529 | 28/02/2003 | 31/03/2006 | Dissolved |
| CROWN DIGITAL SERVICES LIMITED | 03478161 | 28/02/2003 | 31/03/2006 | Dissolved |
| CROWN EMPLOYEE BENEFIT TRUSTEE LIMITED | 04340468 | 28/02/2003 | 31/03/2006 | Dissolved |
| CROWN MULTIMEDIA LIMITED | 03193844 | 28/02/2003 | 31/03/2006 | Dissolved |
| ELWA HOLDINGS LIMITED | 07389613 | 29/09/2010 | 23/01/2013 | Silver |
| ELWA LIMITED | 02700386 | 29/09/2010 | 16/05/2011 | Silver |
| EQUIPE REGENERATION LIMITED | 06143773 | 01/03/2008 | 31/12/2008 | Gold |
| EUROPA NATIONWIDE TECHNICAL SERVICES LIMITED | 03409815 | 17/11/1997 | 13/05/2010 | Dissolved |
| FALCON MECHANICAL SERVICES LIMITED | 01249647 | 29/04/2005 | 13/05/2010 | Dissolved |
| GREATER MANCHESTER COMBINED WASTE AND RECYCLING (HOLDINGS) LIMITED | 06411709 | 29/10/2007 | 04/12/2008 | Dissolved |
| GREATER MANCHESTER COMBINED WASTE AND RECYCLING LIMITED | 06411311 | 20/03/2013 | 26/02/2015 | Dissolved |
| HEALTHCARE (BARTS) LIMITED | 05489821 | 01/12/2007 | 14/12/2009 | Amber |
| HEMIKO LIMITED | 08331646 | 01/05/2019 | 31/03/2023 | One Red Flag |
| JOHN LAING INFRASTRUCTURE LIMITED | 04401816 | 11/12/2007 | 31/01/2019 | Silver |
| JOHN LAING INVESTMENTS LIMITED | 00780225 | 01/09/2007 | 31/01/2019 | Bronze |
| JOHN LAING LIMITED | 01345670 | 13/08/2007 | 31/01/2019 | Silver |
| JOHN LAING SOCIAL INFRASTRUCTURE LIMITED | 03576132 | 11/12/2007 | 31/01/2019 | Dissolved |
| LAING INFRASTRUCTURE HOLDINGS LIMITED | 02759535 | 31/03/2017 | 31/01/2019 | Dissolved |
| LAING INVESTMENTS MANAGEMENT SERVICES LIMITED | 03600959 | 01/12/2009 | 31/01/2019 | One Red Flag |
| LAING PROPERTY HOLDINGS LIMITED | 00806760 | 14/07/2008 | 31/01/2019 | Gold |
| LAPIN INVESTMENT LIMITED | 13205508 | 06/06/2022 | 21/05/2024 | Bronze |
| MNN HOLDINGS LIMITED. | 02797127 | 28/02/2003 | 31/03/2006 | Dissolved |
| MODUS SERVICES (HOLDINGS) LIMITED | 03871198 | 01/04/2008 | 24/11/2016 | Amber |
| MODUS SERVICES LIMITED | 03902894 | 01/04/2008 | 24/11/2016 | Amber |
| PRIMARY PLUS (HOLDINGS) LIMITED | 04347564 | 07/11/2007 | 18/10/2011 | One Red Flag |
| PRIMARY PLUS LAND AND PROPERTY DEVELOPMENTS LIMITED | 04929396 | 07/11/2007 | 14/07/2008 | Dissolved |
| REGENTER LIMITED | 04401853 | 19/12/2007 | 20/05/2010 | Silver |
| REGENTER MANAGEMENT SERVICES LIMITED | 04420874 | 19/12/2007 | 14/01/2011 | One Red Flag |
| SHANKS DUMFRIES AND GALLOWAY HOLDINGS LIMITED | SC245928 | 29/09/2010 | 23/04/2012 | Dissolved |
| SHANKS DUMFRIES AND GALLOWAY LIMITED | SC245927 | 29/09/2010 | 16/05/2011 | Dissolved |