| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CATERPILLAR (U.K.) LIMITED | 00484783 | 31/01/2021 | Gold |
| CATERPILLAR COMMERCIAL NORTHERN EUROPE LIMITED | 03788156 | 31/01/2021 | Silver |
| CATERPILLAR IMPACT PRODUCTS LIMITED | 03428248 | 31/01/2021 | Dissolved |
| CATERPILLAR INVESTMENTS | 03812722 | 31/01/2021 | Dissolved |
| CATERPILLAR LOGISTICS (UK) LIMITED | 05474105 | 31/01/2021 | Bronze |
| CATERPILLAR MARINE POWER UK LIMITED | 00940053 | 31/01/2021 | Gold |
| CATERPILLAR SHREWSBURY LIMITED | 03851260 | 31/01/2021 | Gold |
| CATERPILLAR SKINNINGROVE LIMITED | 02136670 | 31/01/2021 | Gold |
| CATERPILLAR UK HOLDINGS LIMITED | 02728984 | 31/01/2021 | Amber |
| ELECTRO-MOTIVE DIESEL LIMITED | 05910666 | 31/01/2021 | Silver |
| F. PERKINS LIMITED | 00265987 | 31/01/2021 | Gold |
| PERKINS ENGINES COMPANY LIMITED | 02089227 | 31/01/2021 | Silver |
| PERKINS HOLDINGS LIMITED | 00504025 | 31/01/2021 | Gold |
| PROGRESS RAIL LEASING UK LIMITED | 03681421 | 31/01/2021 | Silver |
| PROGRESS RAIL SERVICES UK LIMITED | 07545889 | 31/01/2021 | Gold |
| SPM OIL & GAS SCOTLAND LIMITED | SC131809 | 05/08/2022 | Gold |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BUCYRUS EUROPE HOLDINGS LIMITED | 02187919 | 31/01/2021 | 15/06/2023 | Dissolved |
| BUCYRUS UK LIMITED | 02982547 | 31/01/2021 | 15/06/2023 | Dissolved |
| CATERPILLAR OVERSEAS LIMITED | 05190093 | 31/01/2021 | 15/06/2023 | Gold |
| CATERPILLAR TUNNELLING EUROPE LIMITED | 02594307 | 31/01/2021 | 15/06/2023 | Not Trading |
| CATERPILLAR UK EMPLOYEE TRUST LIMITED | 04018035 | 31/01/2021 | 15/06/2023 | Not Trading |
| CATERPILLAR UK ENGINES COMPANY LIMITED | 05578070 | 31/01/2021 | 15/06/2023 | Gold |
| CATERPILLAR UK GROUP LIMITED | 05623145 | 31/01/2021 | 15/06/2023 | Not Trading |
| FG WILSON (ENGINEERING) LIMITED | 02388858 | 31/01/2021 | 15/06/2023 | Not Trading |
| HBT ENGINEERING SERVICES LIMITED | 01909490 | 31/01/2021 | 01/02/2023 | Amber |
| PERKINS ENGINES GROUP LIMITED | 00771951 | 31/01/2021 | 15/06/2023 | Not Trading |
| PERKINS GROUP LIMITED | 02388892 | 31/01/2021 | 15/06/2023 | Silver |
| PERKINS LIMITED | 00624567 | 31/01/2021 | 15/06/2023 | Not Trading |
| TURNER POWERTRAIN SYSTEMS LIMITED | 03100164 | 31/01/2021 | 15/06/2023 | Silver |