| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| DOLPHIN HOTEL (WINCANTON) LIMITED | 06376312 | 13/04/2018 | Dissolved |
| ISLAND BARN AGGREGATES LIMITED | 01486232 | 19/02/2015 | Gold |
| J.B. RINEY & CO. LIMITED | 01386085 | 21/11/2022 | One Red Flag |
| LAL-GRS LIMITED | 05152586 | 20/11/2019 | One Red Flag |
| NEWHAVEN ROADSTONE LIMITED | 04295593 | 11/02/2011 | Dissolved |
| NORTHWOOD(FAREHAM)LIMITED | 00576518 | 29/11/2013 | Dissolved |
| R.H. ROADSTONE LIMITED | 01923855 | 21/11/2022 | Gold |
| R.W. AGGREGATES LIMITED | 03166538 | 29/11/2013 | Dissolved |
| TARMAC AGGREGATES LIMITED | 00297905 | 21/08/2017 | Silver |
| TARMAC BUILDING PRODUCTS LIMITED | 04026569 | 21/11/2022 | Gold |
| TARMAC CEMENT LIMITED | 00066558 | 21/11/2022 | Silver |
| TARMAC HOLDINGS LIMITED | 07533961 | 21/11/2022 | Gold |
| TARMAC SERVICES LIMITED | 08197397 | 21/11/2022 | Silver |
| TARMAC TRADING LIMITED | 00453791 | 21/08/2017 | Gold |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BRITANNIA AGGREGATES LIMITED | 02304376 | 31/07/2013 | 20/12/2019 | Amber |
| GRS BAGGING HOLDINGS LIMITED | 05089352 | 07/04/2014 | 18/05/2015 | Not Trading |
| GRS BUILDING PRODUCTS LIMITED | 03916174 | 08/08/2013 | 18/05/2015 | Bronze |
| GRS INTEGRATED SOLUTIONS LIMITED | 04022852 | 23/01/2014 | 18/05/2015 | Amber |
| GRS PRODUCTION & LOGISTICS HOLDINGS LIMITED | 05797643 | 21/10/2013 | 18/05/2015 | Not Trading |
| HOPKINS CONCRETE LIMITED | 01779181 | 13/04/2018 | 21/11/2022 | Silver |