| Company | Timeline | Status | |
| Barsham Consulting Limited Director • Finance Director | 22 May 2017←8 Years→Current | Active | |
| Costain Pension Scheme Trustee Limited Director • Retired | 1 Apr 2017←8 Years→Current | Active | |
| Costain Pension Scheme Trustee Limited Director • Retired | 1 Apr 2017←7 Years→6 Oct 2024 | Active | |
| Murray & Roberts South America Limited Director • Accountant | 14 Jul 2009←9 Years→23 Jan 2019 | Active | |
| Multi Construction Pension Trust Limited Director • Accountant | 1 Sep 2004←21 Years→Current | Active | |
| A. Roberts (Civil Engineering) Ltd Director • Accountant | 1 Sep 2004←21 Years→Current | Active | |
| Murray & Roberts United Kingdom Limited Director • Accountant | 2 Aug 2004←14 Years→1 Aug 2018 | Active | |
| Costain International Limited Director • Financial Controller | 1 Jul 1999←5 Years→16 Aug 2004 | Dissolved | |
