| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| GIBB LTD | 03281002 | 01/01/2012 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AMENTUM ENTERPRISE ASSET SOLUTIONS LIMITED | 01172655 | 03/10/2012 | 22/01/2016 | One Red Flag |
| BABTIE INTERNATIONAL LIMITED | SC062616 | 01/01/1995 | 30/06/2005 | Dissolved |
| BABTIE SHAW & MORTON LIMITED | SC142020 | 01/01/1995 | 30/06/2005 | Dissolved |
| BEAR SCOTLAND LIMITED | SC206139 | 11/08/2004 | 07/12/2005 | Bronze |
| GIBB HOLDINGS LTD | 02387714 | 01/01/2012 | 17/01/2017 | Dissolved |
| Gower Associates Ltd | 02210806 | 01/01/1995 | 31/12/2002 | Dissolved |
| JACOBS ENGINEERING UK LIMITED | 02527622 | 01/01/2012 | 17/01/2017 | Dissolved |
| JACOBS EUROPE HOLDCO LIMITED | 09188414 | 24/03/2015 | 07/11/2017 | Bronze |
| JACOBS ONE LIMITED | SC141100 | 01/01/1995 | 07/09/2000 | Silver |
| JACOBS SKM LIMITED | 02664685 | 13/02/1998 | 27/09/2005 | Dissolved |
| JACOBS U.K. LIMITED | 02594504 | 25/03/2009 | 07/11/2017 | Bronze |
| JACOBS UK HOLDINGS LIMITED | 04420029 | 01/01/2012 | 07/11/2017 | Gold |
| JEG ACQUISITION COMPANY LIMITED | 06678113 | 01/01/2012 | 07/11/2017 | Silver |
| L.E.S. CONSTRUCTION LIMITED | 02857923 | 01/01/2012 | 17/01/2017 | Dissolved |
| LINDSEY ENGINEERING SERVICES LIMITED | 05292423 | 01/01/2012 | 17/01/2017 | Dissolved |
| RINGWAY JACOBS LIMITED | 05576465 | 24/02/2010 | 07/11/2017 | Silver |
| SCOTTISH WATER SOLUTIONS 2 LIMITED | SC365084 | 06/04/2010 | 12/09/2013 | Dissolved |
| THISTLE WATER LIMITED | 07208183 | 30/03/2010 | 23/01/2014 | Dissolved |
| WESTMINSTER AND EARLEY SERVICES LIMITED | 00500510 | 01/01/2012 | 17/01/2017 | Dissolved |
| WORLEY EUROPE SERVICES LIMITED | 03371550 | 03/12/2014 | 07/11/2017 | Silver |