| Company | Timeline | Status | |
| John Rennie Consulting Limited Director • Consultant | 9 Jun 2025←6 Months→Current | Active | |
| Geoffrey Osborne Limited Director • Chartered Civil Engineer | 1 Oct 2016←2 Years 11 Months→12 Sep 2019 | In Administration | |
| Vinci Construction UK Limited Director • Chartered Civil Engineer | 26 Jan 2009←2 Years 11 Months→31 Dec 2011 | Active | |
