| Company | Timeline | Status | |
| Troup Bywaters + Anders (2023) Limited Director • Consulting Engineer | 3 Jan 2007←10 Years→31 Mar 2017 | Active | |
| Construction + Expert Solutions Limited Director • Consulting Engineer | 27 Apr 2004←13 Years→30 Apr 2017 | Active | |
| Light + Lighting Solutions Limited Director • Consulting Engineer | 26 Apr 2004←13 Years→30 Apr 2017 | Active | |
| IT + Network Solutions Limited Director • Consulting Engineer | 26 Apr 2004←13 Years→30 Apr 2017 | Active | |
| Hospital Equipment Solutions Limited Director • Consulting Engineer | 26 Apr 2004←13 Years→30 Apr 2017 | Active | |
| Construction + Expert Services Limited Director • Consulting Engineer | 26 Apr 2004←13 Years→30 Apr 2017 | Active | |
| Energy + Environment Solutions Limited Director • Consulting Engineer | 26 Apr 2004←13 Years→30 Apr 2017 | Active | |
| Fire + Protection Solutions Limited Director • Consulting Engineer | 26 Apr 2004←13 Years→30 Apr 2017 | Active | |
| Lift + Escalator Solutions Limited Director • Consulting Engineer | 26 Apr 2004←13 Years→30 Apr 2017 | Active | |
| Services Management Ltd Director • Building Services Engineer | 9 Mar 1998←19 Years→30 Apr 2017 | Dissolved | |
