| Company | Timeline | Status | |
| PCDW Developments Limited Director • Director | 22 Nov 2024←1 Year→Current | Active | |
| Crookes Walker Trustees Limited Director • Consulting Engineer | 19 Dec 2022←2 Years 11 Months→Current | Active | |
| Node Technologies Limited Director • Director | 25 Jan 2019←6 Years→17 Jun 2025 | Dissolved | |
| Sustainable Assessments Limited Director • Director | 30 Mar 2015←4 Years→31 May 2019 | Dissolved | |
| Crookes Walker Consulting Limited Director • Consulting Engineer | 12 Jan 2004←21 Years→Current | Active | |
