| Company | Timeline | Status | |
| Bevan (Pencoed) Limited Director • None | 23 Oct 2014←11 Years→Current | Active | |
| Island Water Services Ltd Director • Water Consultant | 8 Nov 2004←21 Years→Current | Active | |
| William Bevan Scientific Services Ltd Director • Water & Environmental Consulta | 25 Oct 2002←22 Years→11 Feb 2025 | Dissolved | |
