| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Gai Communications Ltd | 02805380 | 01/01/1997 | Dissolved |
| HAWKE CABLE LIMITED | 00548563 | 01/07/2005 | Dissolved |
| HUBBELL UK PENSION TRUSTEES LIMITED | 06425970 | 15/11/2007 | Dissolved |
| Hubbell Lighting Ltd | 03650461 | 01/07/2005 | Dissolved |
| Robinson Instruments Ltd | 00917257 | 01/07/2005 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ACLARA METERS UK LTD. | 09845970 | 11/10/2018 | 26/01/2024 | Silver |
| CHALMIT LIGHTING LIMITED | 03665670 | 01/07/2005 | 26/01/2024 | Gold |
| Elemec Systems (U K) Ltd | 02295155 | 23/01/1998 | 10/11/2000 | Dissolved |
| Elemec Systems (U K) Ltd | 02295155 | 23/01/1998 | 10/11/2000 | Dissolved |
| GAI-TRONICS LIMITED | 05879175 | 16/10/2006 | 26/01/2024 | Gold |
| HAWKE CABLE GLANDS LIMITED | 05879163 | 16/10/2006 | 26/01/2024 | Gold |
| HUBBELL (UK) GULFMEX LIMITED | 09465303 | 02/03/2015 | 26/01/2024 | One Red Flag |
| HUBBELL HOLDINGS EUROPE LIMITED | 08528537 | 14/05/2013 | 26/01/2024 | One Red Flag |
| HUBBELL HOLDINGS LIMITED | 04316671 | 01/07/2005 | 26/01/2024 | One Red Flag |
| HUBBELL LIMITED | 00669157 | 01/07/2005 | 26/01/2024 | Bronze |
| RIPLEY EUROPE LIMITED | 04014745 | 11/07/2022 | 26/01/2024 | Bronze |