| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Officer | WILLIAM COOK MACHINING LIMITED | 🇬🇧Regno Unito | Active | 16/04/2026 – present |
| Officer | COOK PRECISION CERAMIC CASTINGS LIMITED | 🇬🇧Regno Unito | Active | 12/03/2026 – present |
| Officer | SIMPSON PATTERNS LIMITED | 🇬🇧Regno Unito | Active | 05/06/2026 – present |
| Officer | CROWLE WHARF ENGINEERS LIMITED | 🇬🇧Regno Unito | Active | 11/04/2026 – present |
| Officer | A D A MACHINING SERVICES LIMITED | 🇬🇧Regno Unito | Active | 11/02/2026 – present |
| Officer | CHESTERFIELD METAL TECHNOLOGIES LIMITED | 🇬🇧Regno Unito | Active | 08/04/2026 – present |
| Officer | WILLIAM COOK PROPERTIES LIMITED | 🇬🇧Regno Unito | Active | 10/04/2026 – present |
| Officer | WILLIAM COOK INTERMODAL LIMITED | 🇬🇧Regno Unito | Active | 25/05/2026 – present |
| Officer | WILLIAM COOK LEEDS LIMITED | 🇬🇧Regno Unito | Active | 25/05/2026 – present |
| Officer | WILLIAM COOK HOLDINGS LIMITED | 🇬🇧Regno Unito | Active | 15/12/2025 – present |
| Officer | WILLIAM COOK STANHOPE LIMITED | 🇬🇧Regno Unito | Active | 15/12/2025 – present |
| Officer | COOK DEFENCE SYSTEMS LIMITED | — | Active | 17/01/2026 – 02/06/2026 |
| Officer | WILLIAM COOK RAIL LIMITED | — | Active | 14/05/2026 – present |
| Officer | HOWMET HOLDINGS LIMITED | 🇬🇧Regno Unito | Active | 10/05/2026 – 22/04/2016 |
| Officer | HOWMET HOLDINGS LIMITED | 🇬🇧Regno Unito | Active | 10/05/2026 – 21/04/2016 |
| Officer | THOS. FIRTH & JOHN BROWN LIMITED | 🇬🇧Regno Unito | Dissolved | 23/05/2026 – 06/05/2016 |
| Officer | RIVER DON STAMPINGS LIMITED | 🇬🇧Regno Unito | Dissolved | 23/05/2026 – 06/05/2016 |
| Officer | LEEDS FIRECLAY COMPANY LIMITED(THE) | 🇬🇧Regno Unito | Dissolved | 02/02/2026 – present |
| Officer | — | — | Active | 04/02/2026 – present |
| Officer | 00086849 LIMITED | 🇬🇧Regno Unito | Active | 12/01/2026 – 06/05/2016 |
| Officer | MEADOWHALL (EAB) LIMITED | 🇬🇧Regno Unito | Dissolved | 03/02/2026 – present |
| Officer | — | — | Active | 04/02/2026 – present |
| Officer | 00086849 LIMITED | 🇬🇧Regno Unito | Active | 12/01/2026 – 06/05/2016 |
| Officer | SPENCER CLARK LIMITED | 🇬🇧Regno Unito | Dissolved | 03/02/2026 – present |
| Officer | WESTON HOUSE (JS) LIMITED | 🇬🇧Regno Unito | Dissolved | 02/02/2026 – present |
| Officer | ENPAR LIMITED | 🇬🇧Regno Unito | Dissolved | 27/05/2026 – 06/05/2016 |
| Officer | BOGAWANTALAWA DISTRICT TEA COMPANY LIMITED(THE) | 🇬🇧Regno Unito | Dissolved | 03/02/2026 – present |
| Officer | 00107661 LIMITED | 🇬🇧Regno Unito | Dissolved | 03/02/2026 – 25/06/2019 |
| Officer | N.GREENING & SONS LIMITED | 🇬🇧Regno Unito | Dissolved | 02/02/2026 – present |
| Officer | WOODHOUSE & RIXSON LIMITED | 🇬🇧Regno Unito | Dissolved | 05/02/2026 – present |
| Officer | COCKER BROTHERS LIMITED | 🇬🇧Regno Unito | Dissolved | 02/02/2026 – present |
| Officer | LEEDS FIRECLAY COMPANY LIMITED(THE) | 🇬🇧Regno Unito | Dissolved | 02/02/2026 – present |
| Officer | MEADOWHALL (EAB) LIMITED | 🇬🇧Regno Unito | Dissolved | 03/02/2026 – 25/06/2019 |
| Officer | GEORGE TURTON, PLATTS & CO. LIMITED | 🇬🇧Regno Unito | Dissolved | 03/02/2026 – present |
| Officer | AURORA STEELS LIMITED | 🇬🇧Regno Unito | Dissolved | 05/02/2026 – present |
| Officer | — | — | Active | 04/02/2026 – present |
| Officer | NORTH BRITISH STEEL GROUP PLC | 🇬🇧Regno Unito | Active | 02/02/2026 – present |
02/06/2026
resigned
15/04/2026
appointed
23/02/2011
appointed