| Company | Timeline | Status | |
| CC223 Limited Director • Director | 27 Mar 2023←2 Years 8 Months→Current | Active | |
| Downend Car Park Limited Director • Employed | 14 Jun 2016←8 Years→31 Mar 2025 | Active | |
Mars Shipping UK Ltd Director • Managing Director | 4 Apr 2012←5 Years→16 Jan 2018 | Dissolved | |
Gaoh Offshore (UK) Limited Director • Managing Director | 31 Mar 2012←5 Years→23 Jan 2018 | Dissolved | |
| Houlder Engineering Group Limited Director • Chief Executive Officer | 28 Dec 2011←13 Years→Current | Active | |
| Houlder Investments Limited Director • Managing Director | 14 Dec 2007←17 Years→Current | Active | |
| Houlder Offshore Limited Director • Chief Executive Officer | 14 Dec 2007←17 Years→Current | Active | |
| Hart, Fenton & Co Limited Director • Chief Executive Officer | 2 Aug 2006←19 Years→Current | Active | |
| Seaspeed Marine Consulting Limited Director • Managing Director | 15 Nov 2004←21 Years→Current | Active | |
| Houlder Limited Director • Managing Director | 18 Jun 2004←21 Years→Current | Active | |
