| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Officer | S.D.WALKER LIMITED | 🇬🇧Regno Unito | Active | 28/12/2025 – present |
| Officer | ACR TRAINING LIMITED | 🇬🇧Regno Unito | Active | 18/03/2026 – present |
| Officer | S.D.WALKER LIMITED | 🇬🇧Regno Unito | Dissolved | 14/04/2026 – present |
| Officer | SERVICE-TECH ACR LIMITED | 🇬🇧Regno Unito | Dissolved | 05/06/2026 – present |
| Officer | SERVICE-TECH ACR LTD | 🇬🇧Regno Unito | Dissolved | 05/05/2026 – present |
| Officer | ACR TRAINING LIMITED | 🇬🇧Regno Unito | Dissolved | 09/05/2026 – present |
| Officer | ASSOCIATION OF AIR CONDITIONING ENERGY ASSESSORS LTD | — | Dissolved | 16/05/2026 – present |
| Officer | SERVICE-TECH SOLUTIONS LIMITED | 🇬🇧Regno Unito | Dissolved | 14/05/2026 – present |
| Officer | WALKER-FIFE LIMITED | 🇬🇧Regno Unito | Dissolved | 16/05/2026 – present |
| Officer | TELFORD ELECTRICAL SERVICES LIMITED | 🇬🇧Regno Unito | Dissolved | 16/05/2026 – present |
| Officer | AIRETECH LTD | 🇬🇧Regno Unito | Dissolved | 22/05/2026 – present |
| Officer | SERVICE-TECH SOLUTIONS LTD | 🇬🇧Regno Unito | Dissolved | 24/05/2026 – present |
| Officer | E-TESTERS UK LIMITED | 🇬🇧Regno Unito | Dissolved | 02/06/2026 – present |
| Officer | TREKENNICK SERVICES LIMITED | — | Active | 23/04/2026 – present |
| Officer | TREKENNICK SURVEYS LTD. | 🇬🇧Regno Unito | Active | 14/02/2026 – present |
08/06/2026
United Kingdom → England
05/06/2026
United Kingdom
02/12/1998
appointed