| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Gbs Design Ltd | 03889770 | 07/12/1999 | Dissolved |
| HBS CONSULTING ENGINEERS LIMITED | 02968152 | 30/01/1995 | Dissolved |
| HBS ENERGY LIMITED | 06743366 | 06/11/2008 | Dissolved |
| HEATHSIDE PLACE MANAGEMENT COMPANY LIMITED | 03488479 | 27/05/2005 | Not Trading |
| Hbs Design Ltd | 03982268 | 27/04/2000 | Dissolved |
| Houghton Beall Saxton Ltd | 03368898 | 09/05/1997 | Dissolved |
| KMR HOLDINGS LIMITED | 06695978 | 30/09/2008 | Dissolved |
| THORNLEY & LUMB PARTNERSHIP LIMITED | 03570148 | 22/06/2022 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| DESCO (2011) LIMITED | 07557654 | 01/05/2011 | 04/03/2021 | Silver |
| DESCO (DESIGN & CONSULTANCY) LIMITED | 03613462 | 01/04/2013 | 04/03/2021 | Gold |
| HBS CONSULTING ENGINEERS LTD | 13277763 | 19/03/2021 | 30/06/2021 | Not Trading |
| WSP LONDON LIMITED | 02813014 | 01/01/1994 | 27/01/1995 | Dissolved |
| WSP UK LIMITED | 01383511 | 18/05/1991 | 01/01/1994 | Gold |